<h1>10 steps to deploy Angular App on Netlify&nbsp;</h1>
To deploy an Angular app to Netlify, you can follow these steps:
<img src="media/blogs/angular_netlify_png.png" alt="" width="775" height="436">
1) Build your Angular app: Run the following command in the terminal to create a production-ready build of your app.
<div class="bg-black rounded-md mb-4">
<div class="p-4 overflow-y-auto">
<pre class="language-java"><code>ng build</code></pre>
</div>
<div class="p-4 overflow-y-auto">&nbsp; 2) Create a new repository: Initialize a new Git repository for your Angular app, or use an existing repository.</div>
</div>
&nbsp;
3) Commit and push your code: Add all the files from the Angular app's build output to the repository and push them to a branch, typically the main branch.
&nbsp;
4) Sign up for a Netlify account: If you haven't already, go to the Netlify website (<a href="https://www.netlify.com/" target="_new">https://www.netlify.com</a>) and sign up for a free account.
&nbsp;
5) Create a new site: After signing in to your Netlify account, click on "New site from Git" to create a new site.
&nbsp;
6) Connect to your Git repository: Select your Git provider (e.g., GitHub, GitLab, Bitbucket) and authorize Netlify to access your repositories. Choose the repository where your Angular app is located.
&nbsp;
7) Configure the build settings: In the build settings, set the following values:
<ol>
<li>Build command: <code>ng build --prod</code></li>
<li>Publish directory: <code>dist/your-app-name</code> (Replace <code>your-app-name</code> with the actual name of your Angular app)</li>
</ol>
Start the build: Click on the "Deploy site" button to start the build process. Netlify will fetch your code from the connected Git repository, build your Angular app, and deploy it.
&nbsp;
Wait for the deployment to finish: Netlify will automatically trigger the build and deployment process. You can monitor the progress in the Netlify dashboard.
&nbsp;
Once the deployment is complete, you'll receive a URL for your deployed Angular app.Access your deployed Angular app: Visit the provided URL to access your Angular app, which is now deployed on Netlify.
&nbsp;
8) Start the build: Click on the "Deploy site" button to start the build process. Netlify will fetch your code from the connected Git repository, build your Angular app, and deploy it.
&nbsp;
9) Wait for the deployment to finish: Netlify will automatically trigger the build and deployment process. You can monitor the progress in the Netlify dashboard. Once the deployment is complete, you'll receive a URL for your deployed Angular app.
&nbsp;
10) Access your deployed Angular app: Visit the provided URL to access your Angular app, which is now deployed on Netlify.
&nbsp;
That's it! Your Angular app should now be successfully deployed to Netlify. Netlify will automatically rebuild and redeploy your app whenever you push changes to your connected Git repository, making it easy to keep your deployed app up to date.

In this blog we will see how to deploy angular app to netlify step by step in 10 steps.

10 steps to deploy Angular App to Netlify

<h2 id="singleton-object" class="code-line" dir="auto" data-line="2">Singleton Design Pattern</h2>
The Singleton design pattern is a creational design pattern that restricts the instantiation of a class to a single object and provides global access to that instance throughout the application. This pattern ensures that only one instance of a class is created and provides a global point of access to it.
<h2 id="singleton-object" class="code-line" dir="auto" data-line="2">Singleton Object</h2>
Singleton object are the object which are instantiated only once for project (jvm). If we try to get the object then we get same object again and again.
<h3 id="lets-create-singleton-patter-using-java" class="code-line" dir="auto" data-line="7">lets create object using singleton pattern using java</h3>
Lazy way of creating singleton object
<pre class="language-java"><code>class Example{


private static Example ob;

public static Example getExample(){
 if(ob==null){
 ob=new Example();
 }
 return ob;
}


}</code></pre>
<h3 id="calling-the-singleton-object" class="code-line" dir="auto" data-line="27">calling the singleton object</h3>
<pre class="language-java"><code>class Main
{
 public static void main(String args[]){
 Example ob=Example.getExample()
 //using the object

 }
 }
}</code></pre>
Eager way of creating Singleton object
<pre class="language-java"><code>class Example{


private static Example ob=new Example();

public static Example getExample(){
 return ob;
}


}
</code></pre>
Accessing object
<pre class="language-java"><code>class Main
{
 public static void main(String args[]){
 Example ob=Example.getExample()
 //using the object

 }
 }
}</code></pre>
note: for multithreaded environment we use syncronized block for creating singleton object.
<pre class="language-java"><code>class Example{


private static Example ob;

public static Example getExample(){
 if(ob==null){
 syncronized(Example.class){
 if(ob==null)
 {
 ob=new Example();
 }
 }
 }
 return ob;
}


}

</code></pre>
<h2 id="breaking-singleton-design-pattern" class="code-line" dir="auto" data-line="67">Breaking Singleton Design Pattern</h2>
<h3 id="there-are-three-ways-to-break-singleton-design-pattern--lets-talk-about-the-these-way-and-i-am-also-going-to-tell-you-about-the-solution-of-these-problems" class="code-line" dir="auto" data-line="69">There are three ways to break singleton design pattern . Lets talk about it. I am also going to tell you about the solution of these problems.</h3>
<h2 id="1-using-reflection-api" class="code-line" dir="auto" data-line="71">1. Using Reflection API</h2>
With the help of relfection api we can call private constructor&nbsp; and create multiple object by calling private constructor.
<h3 id="lets-see-how-we-can-call-private-constructor" class="code-line" dir="auto" data-line="75">lets see how we can call private constructor</h3>
<pre class="language-java"><code>Constructor&lt;Example&gt; constructor=Example.class.getDeclaredConstructor()

//changing the accessibility to true
constructor.setAccessible(true)

Example example=constructor.newInstance();</code></pre>
<h2 id="solution" class="code-line" dir="auto" data-line="87">solution</h2>
<h3 id="we-can-do-the-soultion-in-two-ways" class="code-line" dir="auto" data-line="89">we can do the soultion in two ways.</h3>
<ol class="code-line" dir="auto" data-line="91">
<li class="code-line" dir="auto" style="font-weight: bold;" data-line="91">using ENUM</li>
</ol>
<pre class="language-java"><code>public enum Example{
 INSTANCE
}</code></pre>
<ol class="code-line" dir="auto" start="2" data-line="101">
<li class="code-line" dir="auto" style="font-weight: bold;" data-line="101">check the object in private constructor if the object exists then throw exception to terminate the execution.</li>
</ol>
<pre class="language-java"><code>private Exmaple(){

 if(ob!=null)
 {
 throw new RuntimeExcepiton("you are trying to break singleton pattern")
 }
}
</code></pre>
<h2 id="2-using-deserialization" class="code-line" dir="auto" data-line="118">2. Using Deserialization</h2>
when we serialize and deserialize the singleton object then singleton pattern automatically got destroyed and provide us different object.
<pre class="language-java"><code>ObjectOutputStream oos = new ObjectOutputStream(new
 FileOutputStream("abc.ob"));
 oos.writeObject(ob);

 System.out.println("serialization done..");

 ObjectInputStream ois = new ObjectInputStream(new FileInputStream("abc.ob"));
 Example s2 = (Example) ois.readObject();
 System.out.println(s2.hashCode());
</code></pre>
<h3 id="solution-1" class="code-line" dir="auto" data-line="137">solution:</h3>
just implement readResolve() method
<pre class="language-java"><code> public Object readResolve() {
 return ob;
 }</code></pre>
<h2 id="3-using-cloning" class="code-line" dir="auto" data-line="148">3. Using cloning</h2>
when we clone then also we get different object.
<h2 id="solution-2" class="code-line" dir="auto" data-line="152">solution</h2>
just override clone method and return the same instance.
<pre class="language-java"><code> @Override
 public Object clone() throws CloneNotSupportedException {
 return samosa;
 }</code></pre>
Video Link:
Singleton Design Pattern:
<iframe style="width: 100%; height: 561px; display: table; margin-left: auto; margin-right: auto;" src="https://www.youtube.com/embed/fs6ZUcF-nuc" width="1785" height="1000" allowfullscreen="allowfullscreen"></iframe>
Breaking of Singleton design Pattern:
<iframe style="display: table; margin-left: auto; margin-right: auto; width: 100%; height: 562px;" src="https://www.youtube.com/embed/zHWusHi9Nt0" width="1772" height="1000" allowfullscreen="allowfullscreen"></iframe>

The Singleton design pattern is a creational design pattern that restricts the instantiation of a class to a single object and provides global access to that instance throughout the application. This pattern ensures that only one instance of a class is created and provides a global point of access to it.

Singleton Design Pattern

Java is a popular programming language that has been around for over two decades and continues to be in high demand. Here are some reasons why you may want to consider learning Java in 2023:
<img src="media/blogs/java_top_10_in_2023_dPII8pj.png" alt="" width="400" height="400">
1.&nbsp;&nbsp;&nbsp;&nbsp; Job demand: Java is still one of the most in-demand programming languages in the industry, and many companies rely on Java-based technologies for their software solutions.
&nbsp;
2.&nbsp;&nbsp;&nbsp;&nbsp; Cross-platform compatibility: Java is designed to be platform-independent, meaning that programs written in Java can run on different operating systems without modification. This makes it a popular choice for building software that needs to run on multiple platforms.
3.&nbsp;&nbsp;&nbsp;&nbsp; Large developer community: Java has a large and active community of developers who contribute to open-source projects, share knowledge, and offer support.
4.&nbsp;&nbsp;&nbsp;&nbsp; Versatility: Java is used in a wide range of applications, from web development to mobile app development to game development. It is also used in enterprise applications and big data processing.
5.&nbsp;&nbsp;&nbsp;&nbsp; Strong ecosystem: Java has a robust ecosystem of tools, frameworks, and libraries that can help developers build complex applications more efficiently.
&nbsp;
Overall, Java is a solid choice for anyone looking to learn a programming language in 2023 due to its continued popularity and versatility in the industry.
&nbsp;
&nbsp;

In this blog we are going to tell 5 reasons to opt java programming language in 2023. Java is a popular programming language that has been around for over two decades and continues to be in high demand.

Why java in 2023 ?

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<div class="min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap">
<div class="markdown prose w-full break-words dark:prose-invert light">
<img src="media/blogs/code_in_2023.png" alt="" width="336" height="336">
Here are the top 10 programming languages to learn in 2023, based on their popularity, job demand, and growth in the industry:
1) Python: Python is an interpreted, high-level, general-purpose programming language that is easy to learn and widely used in web development, scientific computing, data analysis, artificial intelligence, and machine learning.
<img src="media/blogs/python_top_10_in_2023.png" alt="" width="247" height="247"> &nbsp;
2) JavaScript: JavaScript is a high-level, interpreted programming language that is commonly used in web development. With the rise of front-end frameworks like React and Angular, JavaScript has become a crucial language for building web applications, and its demand is expected to continue growing.&nbsp; &nbsp;
<img src="media/blogs/js_top_10_in_2023.png" alt="" width="293" height="293">
3) Java&nbsp;:Java is a popular programming language that has been around for over two decades and continues to be in high demand. Why you choose java , we will talk in seperate blog.Java is still one of the most in-demand programming languages in the industry, and many companies rely on Java-based technologies for their software solutions.
<span style="font-size: 11.0pt; line-height: 107%; font-family: 'Calibri',sans-serif; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-IN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><img src="media/blogs/java_top_10_in_2023.png" alt="" width="331" height="331">
4) Rust: Rust is a system programming language that is designed for speed, safety, and concurrency. It has gained popularity in recent years for its ability to prevent memory-related bugs and its performance in low-level tasks. As the need for secure and high-performance systems increases, Rust is expected to become more popular in 2023.
<img src="media/blogs/rust_top_10_in_2023.png" alt="" width="344" height="344">
5) TypeScript: TypeScript is a superset of JavaScript that adds static typing and other features to improve code quality and maintainability. It is becoming increasingly popular in the web development community, especially in large-scale projects, and its demand is expected to grow in 2023.
<img src="media/blogs/ts_top_10_in_2023.png" alt="" width="361" height="361">
6) Go: Go is a statically typed, compiled programming language that is designed for efficiency, scalability, and concurrency. It has gained popularity in recent years for its ability to handle high-performance tasks, such as networking and web servers. As the need for efficient and scalable systems grows, Go is expected to become more popular in 2023.
<img src="media/blogs/go_top_10_in_2023.png" alt="" width="380" height="380">
7) Kotlin: Kotlin is a statically typed, cross-platform programming language that is becoming increasingly popular in the Android development community. It is designed to be more concise and expressive than Java, and its demand is expected to grow in 2023.
<img src="media/blogs/kotlin_top_10_in_2023.png" alt="" width="353" height="353">
8) Swift: Swift is a compiled, general-purpose programming language that is designed by Apple for iOS, macOS, watchOS, and tvOS development. It is becoming increasingly popular in the mobile app development community, and its demand is expected to continue growing in 2023.
<img src="media/blogs/swift_top_10_in_2023.png" alt="swift programming" width="382" height="382">
9) C#: C# is a modern, object-oriented programming language that is widely used in Windows desktop and web application development, game development, and Unity game engine development. Its demand is expected to grow in 2023.
<img src="media/blogs/c_sharp_top_10_in_2023.png" alt="c sharp proramming" width="386" height="386">
10) PHP: PHP is a server-side scripting language that is commonly used for web development. Despite facing criticism in recent years, PHP remains a widely used language, and its demand is expected to continue in 2023.
<img src="media/blogs/php_top_10.png" alt="php programming" width="388" height="388">
Please subscribe and follow on youtube channel and Instagram&nbsp;
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&nbsp;
</div>
</div>
</div>

In this blog i am going to tell top 10 programming languages that you can learn in 2023 for Opportunities .

Top 10 Programming Languages in 2023

<img src="media/blogs/What%20is%20kubernetes.png" alt="" width="455" height="340">
&nbsp;
Kubernetes is an open source system for automating deployment, scaling, and management of containerized applications. Kubernetes was originally developed by Google and donated to the Cloud Native Computing Foundation (CNCF) in 2015. Kubernetes has become one of the most popular tools for managing containers in production environments because it provides a way to easily manage large numbers of containers across multiple hosts while keeping them up-to-date with each other's state.
<h2 dir="ltr">History of Kubernetes</h2>
Kubernetes was created by Google and donated to the Cloud Native Computing Foundation (CNCF) in 2015. The motivation behind its development was to create an open-source container orchestration system that could be used across different cloud providers, which would make it easier for developers to build and deploy their applications. Kubernetes has come a long way since it was first introduced in 2014 at Google's annual conference, Google I/O. The first version of Kubernetes was released on July 21st, 2015; since then there have been several other releases with new features added to each one:
<ul>
<li dir="ltr" aria-level="1">
1.0 - July 21st 2015
</li>
<li dir="ltr" aria-level="1">
1.1 - February 9th 2016
</li>
<li dir="ltr" aria-level="1">
1.2 - March 8th 2017
</li>
<li dir="ltr" aria-level="1">
1.3 - May 17th 2018
</li>
</ul>
<h2 dir="ltr">Kubernetes Architecture</h2>
The Kubernetes architecture consists of five major layers:
<ul>
<li dir="ltr" aria-level="1">
API server - The API server is the entry point for all clients to interact with the cluster. It provides an HTTP-based RESTful API that can be used to create, configure, and manage objects in the cluster. The API server also handles authentication requests from users who want to access resources in your cluster.
</li>
<li dir="ltr" aria-level="1">
Scheduler - This component decides which pods should run on which nodes based on resource availability, node priority settings (for example), or other factors such as pod labels or user preferences.
</li>
<li dir="ltr" aria-level="1">
Controller manager - This component manages controller objects such as replication controllers and service accounts that are responsible for automating various processes within your cluster such as scaling up/down workloads based on demand patterns over time; enforcing quotas on certain resources like CPU usage percentage per pod; etc...
</li>
</ul>
<h2 dir="ltr">Kubernetes Deployment</h2>
The deployment of Kubernetes is a three-step process:
<ol>
<li dir="ltr" aria-level="1">
Create the cluster
</li>
<li dir="ltr" aria-level="1">
Deploy the control plane and worker nodes
</li>
<li dir="ltr" aria-level="1">
Configure the cluster
</li>
</ol>
<h2 dir="ltr">Kubernetes Networking</h2>
Kubernetes networking is a complex topic, but it's also one of the most important things to understand when you're deploying your containerized applications. The three main types of Kubernetes networking are:
<ul>
<li dir="ltr" aria-level="1">
Flat Networking - This is the default mode for Kubernetes clusters, where every pod gets its own IP address on the same subnet. This approach works well if you have a small number of pods and don't need to worry about scaling out your infrastructure. However, it doesn't scale well beyond a few dozen nodes because each node has to handle all traffic going through its network interfaces (NICs).
</li>
<li dir="ltr" aria-level="1">
Overlay Networking - This mode uses VXLAN tunneling technology so that multiple hosts can share a single IP address space across an overlay network while still maintaining isolation between pods running on different hosts within that space (i.e., no two containers can communicate directly).
</li>
<li dir="ltr" aria-level="1">
Canal Networking - Canal networks allow you to run containers inside virtual machines (VMs) instead of bare metal servers by using software like Docker Machine or Kubeadm with OpenStack cloud providers like AWS EC2 Container Service (ECS).
</li>
</ul>
<h2 dir="ltr">Kubernetes Storage</h2>
Kubernetes storage is a critical component of your cluster and should be carefully considered. Kubernetes supports several different types of storage, each with their own unique characteristics and benefits. The most common types are:
<ul>
<li dir="ltr" aria-level="1">
Dynamically Provisioned Local Storage (Docker Volume Driver) - This is the default option for storing persistent data on a node in a pod, but it has some limitations that make it less than ideal for production workloads. It's also not supported by all providers yet (like AWS). If you're using this type of volume driver, make sure you know what your options will be if something goes wrong!
</li>
<li dir="ltr" aria-level="1">
Persistent Volumes - Persistent volumes can be used as either block or file systems within containers or pods respectively (depending on how they're configured). They allow users to share data across multiple containers/pods while giving them control over how much space those containers/pods take up on disk(s). Because persistent volumes exist outside of any one container/pod instance--and thus outside its lifetime--they present an attractive alternative when compared against dynamically provisioned local storage solutions like Docker Volumes Driver mentioned above which require manual management after creation time."
</li>
</ul>
<h2 dir="ltr">Kubernetes Security</h2>
Kubernetes security is a complex topic. There are many different options and best practices to consider, and it's easy to make mistakes when setting up your cluster. To help you navigate this territory, we'll break down Kubernetes security into four main areas:
<ul>
<li dir="ltr" aria-level="1">
Authentication and authorization
</li>
<li dir="ltr" aria-level="1">
Networking (including load balancing)
</li>
<li dir="ltr" aria-level="1">
Storage (including persistent storage)
</li>
</ul>
<h2 dir="ltr">Kubernetes Monitoring</h2>
Kubernetes monitoring is a complex and nuanced topic. There are many different approaches to monitoring Kubernetes, each with their own pros and cons. In this section we'll discuss the most common types of Kubernetes monitoring and give you some best practices for implementing them in your environment. We'll also discuss some of the challenges associated with monitoring your cluster and how to overcome them!
<h2 dir="ltr">Kubernetes Management</h2>
Kubernetes management is the process of deploying and maintaining Kubernetes clusters. There are a number of different ways you can manage your cluster, including:
<ul>
<li dir="ltr" aria-level="1">
Using an automated tool like Helm or Kops to deploy your cluster on AWS, Google Cloud Platform (GCP), or Azure.
</li>
<li dir="ltr" aria-level="1">
Using a managed service like Google Container Engine (GKE) or Azure Container Service (AKS). These services allow you to focus on building your applications instead of worrying about the infrastructure underneath them. They also come with built-in monitoring and alerting features that make it easier for you to stay up-to-date on any issues that may arise in your environment. While these options provide great convenience, they do come at a cost--namely higher costs than self-hosted solutions like Minikube or EKS would incur over time as well as limitations around security and flexibility due to being tied into specific cloud providers' APIs rather than being able to use whichever one best meets your needs at any given moment (for example: migrating from GCP's Compute Engine instance type "f1-micro" over onto AWS' spot market when demand drops).
</li>
</ul>
<h2 dir="ltr">Conclusion</h2>
So, what are the key takeaways from this blog post?
<ul>
<li dir="ltr" aria-level="1">
Kubernetes is an open source system for automating deployment, scaling and management of containerized applications.
</li>
<li dir="ltr" aria-level="1">
It provides a way to manage your containers in a cluster while providing features like load balancing, service discovery and replication control.
</li>
<li dir="ltr" aria-level="1">
You can use it with any cloud provider or on-premise infrastructure that supports Docker.
</li>
</ul>
&nbsp;

Kubernetes is an open source system for automating deployment, scaling, and management of containerized applications. Kubernetes was originally developed by Google and donated to the Cloud Native Computing Foundation (CNCF) in 2015.

What is Kubernetes?

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/ANSIBLE%20(1).png" alt="" width="513" height="289">
Ansible is a tool that automates repetitive tasks in IT, such as managing configurations, deploying applications, and orchestrating systems. It is a user-friendly, open-source solution that doesn't require any extra software to be installed on the systems it manages.
IT teams can use Ansible to create easy-to-read playbooks, written in YAML, which describe how a system should be set up. Playbooks can be used to automate a wide range of tasks, from installing software and managing files to provisioning infrastructure and interacting with cloud providers.
Ansible's main benefit is that it can manage systems consistently and reliably. By defining the desired state of a system in a playbook, IT teams can ensure that all systems are configured identically, and changes are made in a controlled, auditable manner.
DevOps and IT automation specialists commonly use Ansible, and it has a substantial, active user community.
Ansible uses a client-server architecture to manage systems. It is built as a configuration management tool that utilizes a declarative language to define how a system should be set up.
When an Ansible playbook is run, Ansible connects to the target systems using SSH or WinRM, and carries out the tasks defined in the playbook, bringing the systems to the desired state in a specific order.
Ansible uses a push-based model where the control machine, which is the machine from which the user runs the playbook, sends the configuration to the target systems. The control machine must have Ansible installed.
An agentless architecture is one of Ansible's main benefits. Unlike other configuration management tools, Ansible doesn't require any software to be installed on the target systems, making it easy to use and set up.
Ansible provides a large collection of pre-built modules, referred to as "Ansible modules," that IT teams can use to perform tasks such as managing files, installing packages, and working with cloud providers. These modules enable IT teams to carry out tasks consistently across different systems.
Overall, Ansible streamlines IT automation by providing a user-friendly, agentless solution that ensures systems are managed consistently and reliably.
&nbsp;

Ansible is a tool that automates repetitive tasks in IT, such as managing configurations, deploying applications, and orchestrating systems. It is a user-friendly, open-source solution that doesn't require any extra software to be installed on the systems it manages.

What is Ansible?

Data analytics involves utilizing a variety of techniques to make sense of large and complex data sets. This could include collecting data from multiple sources, cleaning and preparing the data, using analytical tools such as Excel or R to uncover insights, and then communicating those findings to others through visualizations and reports. The goal of data analytics is to find useful information and use it to inform decisions and conclusions. People working in data analytics are commonly found in sectors like healthcare, retail, finance, and technology.
The field of data analytics will expand more in the future as more organizations are recognizing the benefits of data-driven decision making. With the increasing amount of data being generated by businesses, governments and individuals, the demand for individuals with data analytics skills is also increasing. With advanced technologies like Artificial Intelligence (AI) and Machine Learning (ML) becoming more prevalent, data analysts will have the ability to process bigger and more complex datasets and make more accurate predictions. This will lead to faster and more accurate decisions, and better results in areas like finance, technology,retail, healthcare etc as mentioned above . The rise of IoT will also create more data, which will lead to more opportunities to extract insights and make data-driven decisions.
So in case you want to have a growing career, data analyst is that job. And knowing these skills will keep you at the top in the list of recruiters if you want to be a Data Analyst:
<img src="media/blogs/Data%20Analysis.jpg" alt="" width="450" height="301">
<h4>SQL(Structured Query Language):</h4>
&nbsp;
To perform any operation on data we need to have the data stored somewhere and as we know, SQL is a very powerful tool for easily accessing, manipulating, analyzing and storing data in relational databases. In other words, to perform any sort of operation on data, we need to know SQL.
SQL is also a widely used and standardized language, making it easy for data analysts to work with data from different sources. This makes it an essential tool for data analysts who need to work with data from different systems and platforms. Additionally, SQL is supported by a wide range of analytical and business intelligence tools, which makes it easy to integrate with other tools and technologies used in data analytics.&nbsp;So you should have a good command of SQL.
<h4 dir="ltr">Programming Language:&nbsp;</h4>
<img src="media/blogs/R.jpg" alt="" width="322" height="156">
There are several programming languages which are helpful for data ana;lysis depending upon the tasks and needs of the organization. Most commonly used languages like java,scala spark,python,R any of these can be used for data analysis in fact the data analysts use a combination of languages and tools to complete their works.
<img src="media/blogs/Python.png" alt="" width="400" height="225">
For recommendation, You can learn python as it is a very simple language, easy to understand and it is very powerful at the same time as it has extensive libraries for data analysis and visualization such as matplotlib, pandas, numpy&nbsp; etc.
<h4 dir="ltr">Excel:&nbsp;</h4>
<img src="media/blogs/excel.png" alt="" width="279" height="155">
Excel provides a wide range of features&nbsp; like sorting, filtering etc for cleaning and transforming&nbsp; the data. It also provides a wide range of features for visualizing data, such as charts, graphs, and tables, which makes it easy to communicate data insights to others. Also, it is easy to automate repetitive tasks for excel using its VBOs and macros, along with that it is easy to be integrated with other tools to work with like R, SQL, Python etc.
So basic excel operations are recommended for data analysis. 
<h4 dir="ltr">Statistics:&nbsp;</h4>
Statistics plays a crucial role in data analysis as it allows data analysts to extract meaningful insights from large and complex data sets. It provides a variety of techniques and methodologies that allow analysts to understand patterns, relationships and trends in the data. With the help of statistical methods, analysts can make predictions and draw conclusions that can help in decision-making. Additionally, statistics also helps in validating the results and inferences drawn from the data, giving analysts a higher level of confidence in their findings. In summary, statistics acts as a key tool for data analysts to understand and interpret data, making it a very important part of the data analysis process.
<img src="media/blogs/statistics.png" alt="" width="310" height="250">
<h4 dir="ltr">Data visualization Tool:&nbsp;</h4>
Tools like Looker or Tableau are helpful. You can learn any data visualization tool. Some of these are:
Tableau: Tableau is a widely used data visualization tool that allows users to create interactive visualizations, dashboards, and reports. It has a user-friendly interface and a wide range of built-in chart types and visualizations.
<img src="media/blogs/tableau.png" alt="" width="350" height="197">
Power BI: Power BI is a data visualization tool from Microsoft that allows users to create interactive dashboards and visualizations. It has a wide range of data connectors and integration options.
Looker: Looker is a data visualization tool that allows users to create interactive dashboards and reports. It has a wide range of data connectors and integration options.
<img src="media/blogs/looker.png" alt="" width="400" height="200">
<h4 dir="ltr">Communication:</h4>
Communication skill is very important for any profession, hence it goes for data analysis as well. To make people understand about your data, you need to have great communication skills. 
So conquer these skills and tools and you&rsquo;ll always be on the top in the list of recruiters.
Happy learning!!!
&nbsp;

Data analytics involves utilizing a variety of techniques to make sense of large and complex data sets. This could include collecting data from multiple sources, cleaning and preparing the data, using analytical tools such as Excel or R to uncover insights, and then communicating those findings to others through visualizations and reports. The goal of data analytics is to find useful information and use it to inform decisions and conclusions. People working in data analytics are commonly found in sectors like healthcare, retail, finance, and technology.

Crucial skills for data analytics

&nbsp;
Blockchain is a distributed ledger technology(DLT)&nbsp; that is used to record and manage digital transactions. Blockchain is basically a&nbsp; decentralized and dispersed database that stores a growing list of records, known as blocks, which are linked and protected through cryptography. Each block comprises a timestamp and a connection to the prior block, creating a chain of blocks, therefore the name blockchain.
Blockchain, which originally debuted as the foundation for the digital currency Bitcoin, has progressed greatly in recent years. It has now secured its place as a revolutionary technology that has the ability to disrupt multiple industries and transform the way business is conducted. Today in this post, we will understand the different ways blockchain technology is being applied and how it is being utilized to create so many innovative solutions.
<h3 dir="ltr">Supply Chain Management</h3>
Blockchain technology can be utilized to establish a safe and open record of all transactions in the supply chain, which can improve efficiency and reduce costs. This is particularly beneficial in industries like food and beverages, where the quality and safety of product is crucial. By using blockchain technology, it is possible to trace a product's journey from its origin to the end consumer, which can enhance transparency and accountability and build trust in the supply chain.
<img src="media/blogs/SCM.jpg" alt="" width="432" height="288">
<h3 dir="ltr">Electronic Voting System</h3>
Another unnoticed area where blockchain technology can be used is in the Voting.
Nowadays we keep on hearing from politicians as well as people that here voting was unfair, their voting was unfair. So the solution can be blockchain.By using blockchain technology, voting systems can be made unchangeable and transparent, which can help to increase trust in the electoral process. Additionally, blockchain technology can be used to create a secure and transparent record of the voting process, which can help to ensure that the results are accurate and fair. 
<h3 dir="ltr">Healthcare Sector</h3>
In the healthcare industry, blockchain technology is being used to create secure and transparent electronic health records (EHRs). Electronic Health Records (EHRs) play a vital role in contemporary healthcare and are utilized to store patient data such as medical history, prescriptions and test results. Blockchain technology enables the creation of secure and unchangeable records of EHRs which can safeguard patient privacy and improve the overall quality of healthcare.
<img src="media/blogs/healthsector.jpg" alt="" width="200" height="300">
<h3 dir="ltr">Education Sector</h3>
In the education sector, blockchain technology is being utilized to establish secure and open records of student accomplishments. By using blockchain technology, it's possible to create tamper-proof records of student grades, test scores and other achievements which can guarantee the records are accurate and fair. Additionally, blockchain technology can automate various procedures involved in student registration and enrollment, which can assist in decreasing costs and boosting efficiency.
<img src="media/blogs/Education%20sector.jpg" alt="" width="473" height="350">
<h3 dir="ltr">Real Estate Sector</h3>
In the real estate industry, blockchain technology is employed to establish secure and clear property records. Using blockchain technology, it is possible to develop tamper-proof records of property ownership and transactions which may help to reduce fraud and enhance trust in the property market. Moreover, blockchain technology can automate several of the procedures involved in purchasing and selling property, which can help in reducing costs and increasing efficiency.
<h3 dir="ltr">Financial industry</h3>
Blockchain technology&nbsp; has the potential to transform the manner in which financial transactions are conducted.Blockchain enables direct transactions between individuals without the need for intermediaries like banks, thereby increasing efficiency and reducing expenses. Additionally, the technology offers a secure and clear way of conducting transactions, which can decrease fraud and build trust in the financial system.
<img src="media/blogs/finance.jpg" alt="" width="453" height="340">
In conclusion, blockchain technology has the potential to disrupt various industries and change the way we conduct business. It can be used to create new and innovative solutions that are more secure, transparent, and efficient than traditional methods. We can expect to see more and more applications of blockchain technology in the future, and it will be exciting to see how it continues to shape our world.
If you want to know what blockchain is, then refer to&nbsp;<a href="https://learncodewithdurgesh.com/blogs/what-is-blockchain" target="_blank" rel="noopener">What is blockchain</a>
&nbsp;

Blockchain is a distributed ledger technology(DLT)  that is used to record and manage digital transactions. Blockchain is basically a  decentralized and dispersed database that stores a growing list of records, known as blocks, which are linked and protected through cryptography. Each block comprises a timestamp and a connection to the prior block, creating a chain of blocks, therefore the name blockchain.  Blockchain, which originally debuted as the foundation for the digital currency Bitcoin, has progressed greatly in recent years. It has now secured its place as a revolutionary technology that has the ability to disrupt multiple industries and transform the way business is conducted. Today in this post, we will understand the different ways blockchain technology is being applied and how it is being utilized to create so many innovative solutions.

The role of blockchain technology in various applications

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Intro_.jpg" alt="Img_intro" width="354" height="236">
Since Covid 19 came into existence, digital technologies have been evolving very rapidly.Now, even when the effects of covid are fading gradually, business tech is set to continuously grow in 2023. So keeping this in mind, it's high time we focus on mastering these technologies to keep growing with these tech. Industry experts from Forbes Technology Council share their predictions for the business tech trends that will dominate headlines and C-suite meetings in 2023. And these technologies are:
<h3 dir="ltr" role="presentation">Artificial Intelligence and Machine Learning</h3>
&nbsp;
<h3 dir="ltr" role="presentation"><img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/AI_ML_Ing_2.jpg" alt="AI_ML_Img" width="487" height="325"> </h3>
They&rsquo;re not new but every day we get more data about the world, and we store and process it. So there is huge scope of growth in AI and ML. But reading and using it is becoming more complex. ML and AI will play a stronger role in data-based decision making in business, healthcare and environmental studies. Five years ago, its adoption was limited, but I believe that since 2020, it has become more affordable globally.
<h3 dir="ltr" role="presentation">Robotic Process Automation (RPA)</h3>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/RPA.jpg" alt="RPA_img" width="449" height="299">
RPA is a rapidly growing field and it will definitely have a&nbsp; significant impact on the way work is done in the future.
Robotic process automation (RPA) is a type of technology that mimics human actions without their intervention,in other words, it allows organizations to automate repetitive and routine tasks that are typically performed by humans. RPA uses software preferred as&nbsp; "bots" or "robots" to replicate the actions of a human worker in completing a task. These bots are first trained to behave in a certain way and after that they perform the task as many times as we want.
&nbsp;It is definitely going to be the future because in the future , it is going to save a lot of money on the human workforce by automating routine tasks, organizations can reduce labor costs and increase efficiency. Bots can work faster and more accurately than humans, reducing the time it takes to complete tasks and reducing the risk of errors.&nbsp;
Currently it is being used in healthcare, telecom, finance, customer service etc.
<h3 dir="ltr">Quantum Computing</h3>
Quantum computers are still in the early stages of development and are not yet widely available. However, they have the potential to revolutionize fields such as drug discovery, weather forecasting, and financial modeling.
Quantum computers are built on the principles of quantum theory, which describes the behavior of very small particles such as atoms and subatomic particles. Quantum computing is a type of computing that uses quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data.&nbsp; Quantum computers have the potential to perform certain types of calculations much faster than classical computers, which are based on classical physics and use bits to store and process information. This is because quantum computers can perform many calculations in parallel, whereas classical computers must perform them sequentially.
But, Quantum computers are much more complex and fragile than classical computers, and it can be difficult to build and maintain them.
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/quantum_computing.png" alt="quantum_computing" width="278" height="154">
&nbsp;
Also it is very difficult to write programs for Quantum computers as the algorithms used to program them are very different from classical computers.
Despite these challenges, researchers and companies around the world are actively working to develop and commercialize quantum computers, and it is expected that they will play an important role in the future of computing.
<h3 dir="ltr">Virtual Reality and Augmented Reality</h3>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/VR_AR.jpg" alt="VR_AR" width="302" height="452">
Virtual reality (VR) is a computer-generated simulation of a three-dimensional environment that can be interacted with in a seemingly real or physical way by a person using special electronic equipment, such as a headset with a screen or gloves fitted with sensors. VR can be used for a variety of purposes, including gaming, education, and training.
Augmented reality (AR) is a technology that superimposes computer-generated images or information on top of a user's real-world environment. This can be done using a device such as a smartphone or a headset, or through a specialized AR application. AR can be used for a variety of purposes, including education, entertainment, and marketing.
Both VR and AR have the potential to change the way we interact with computers and the world around us. They can be used to enhance experiences, such as gaming or learning, and have numerous potential applications in fields such as education, entertainment, and healthcare.
<h3 dir="ltr" role="presentation">Blockchain</h3>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/blockchain.jpg" alt="blockchain_img" width="279" height="418">
&nbsp;
Blockchain is a type of shared database that stores data in blocks and these blocks are linked together through cryptography. It stores data electronically in digital format. Blockchains are majorly known because of their role in cryptocurrency systems e.g. Bitcoin&nbsp; for maintaining a secure and decentralized record of transactions.
Blockchain was first outlined by Stuart Haber and W. Scott Stornetta, two researchers who wanted to implement a system where document timestamps could not be tampered with, in 1991. But it was actually implemented in 2009, an anonymous developer named Satoshi Nakamoto created bitcoin using Blockchain and that's when cryptocurrency boomed.It is a rapidly evolving technology, and it is expected to have a significant impact on a wide range of industries in the coming years.
To know more about block chain, read this: <a href="https://learncodewithdurgesh.com/blogs/what-is-blockchain" target="_blank" rel="noopener">What is Blockchain?</a>
<h3 dir="ltr" role="presentation">Internet of Things (IoT)</h3>
IoT has the potential to revolutionize many industries and aspects of our lives, by enabling devices to interact with each other and with people in new ways.&nbsp;The Internet of Things (IoT) refers to the growing network of physical devices, such as appliances, vehicles, and industrial equipment, that are connected to the internet and can communicate with each other and exchange data. These devices are equipped with sensors, software, and connectivity that allow them to collect and share data about their usage and the environment around them.
Some of the potential applications of IoT include:
<ul>
<li dir="ltr">Smart homes: IoT devices can be used to automate and control various aspects of a home, such as heating, lighting, and security.</li>
<li dir="ltr">Connected vehicles: Vehicles can be equipped with sensors and connectivity that allow them to communicate with each other and with infrastructure, such as traffic lights, to improve safety and efficiency.</li>
<li dir="ltr">Industrial automation: IoT devices can be used to improve the efficiency and productivity of industrial processes.</li>
<li dir="ltr">Healthcare: IoT devices can be used to monitor and track the health of individuals and provide medical professionals with real-time data.</li>
</ul>
Smart Mobiles, smart refrigerators, smartwatches, smart fire alarms, smart door locks, smart bicycles, medical sensors, fitness trackers, smart security system are some of the best examples of Iot Devices
So if you want to grow rapidly with the pace of technologies, then you can learn these technologies and nail it.
 
&nbsp;

Since Covid 19 came into existence, digital technologies have been evolving very rapidly.Now, even when the effects of covid are fading gradually, business tech is set to continuously grow in 2023. So keeping this in mind, it's high time we focus on mastering these technologies to keep growing with these tech. Industry experts from Forbes Technology Council share their predictions for the business tech trends that will dominate headlines and C-suite meetings in 2023. And these technologies are:

Trending technologies to learn in 2023

Wishing you all a very happy new year 2023!!!!!!!.
&nbsp;
Everybody is so busy competing with their competitors that they forget that they are human beings and they also have a life, and instead of running a race they can actually enjoy the journey.
This is the beginning of a new year and every year one thing is common, taking resolutions.&nbsp;But the problem is we take resolution and break it after sometime because we are not able to either relate to it, or we find it very difficult in the beginning, and we quit.
So this year, let's take those basic self improvement&nbsp; resolutions which are very easy to follow and&nbsp; can make us feel more human, more alive and help us enjoy this journey called life. These things are so simple that you&rsquo;ll not end up discontinuing&nbsp; them like every year.
Remember to start with investing less time and try to make it a habit. Once it becomes a habit, you don&rsquo;t have to worry much about it, your subconscious mind will handle these things for you.
5 resolutions you can take this year for self improvement:
<h1 dir="ltr" role="presentation">Dedicate some time every day for learning something</h1>
Generally people have this mindset that once our education complets, our learning completes. This is the worst mindset to have. Learning never ends, and learning is the only skill which makes you confident about yourself.
Fix some time in a day which you&rsquo;ll dedicate to learning no matter what. And everyday try to do this at the same time, it will help your subconscious mind to create a habit and remember it. Learn any new skill you can.&nbsp;
<img src="media/blogs/Change_life_2023_1.jpg" alt="" width="431" height="288">
<h1 dir="ltr" role="presentation">Meditate&nbsp;</h1>
<img src="media/blogs/change_your_life_2023_2.jpg" alt="" width="517" height="451">
Dedicate some time for meditation everyday. Meditation helps you clear off negative thoughts from your mind and increases your concentration power. When you initially start meditation, you&rsquo;ll only have negative thoughts and you&rsquo;ll find it very difficult to concentrate for more than 15 seconds. But gradually, you&rsquo;ll be able to concentrate and you&rsquo;ll start feeling better about yourself.
<h1 dir="ltr" role="presentation">Save money</h1>
<img src="media/blogs/change_your_life_2023_3.jpg" alt="" width="444" height="333">
Very useful tip for everyone. Save some money every month. Automate your deduction that when you get your salary, a fixed amount of money automatically gets transferred to a different account of yours.You have to make up your mind that whatever money is left, you have to take care of yourself in this much money. And use that money for investment to increase your savings.&nbsp;
This tip is even for students. No matter how much pocket money you get, transfer some amount to a different account for investment and spending upon yourself.&nbsp;&nbsp;
<h1 dir="ltr" role="presentation">Listen</h1>
<img src="media/blogs/change_your_life_2023_4.jpg" alt="" width="496" height="331">
These days, this is the worst habit of any individual. We don&rsquo;t listen to grasp anything or understand anything. We listen to others to contradict them or reply to them. We always listen to others to discuss.
So try to develop this habit of&nbsp; listening to others, not to retaliate back, but to grasp things. Just listen. There must be a reason God has given us two years and only one mouth. So listen more and speak less.
<h1 dir="ltr" role="presentation">Document your important decisions&nbsp;</h1>
<img src="media/blogs/change_your_life_2023_5.jpg" alt="" width="599" height="400">
Last but not the least, if you're taking any crucial decision in your life, be it the carrier you are choosing or the car you're buying, write down why you are choosing this or why you are taking this decision. You can write it down either on a paper&nbsp; or even you can write it on your laptop or mobile phone in any software os sheet. This will do 3 things:
<ol>
<li dir="ltr" aria-level="1">
You&rsquo;ll have a logical reason given by yourself for important decisions so you&rsquo;ll not take any decision illogically.
</li>
<li dir="ltr" aria-level="1">
At any point of time in your life, if you feel, why you started this journey, you&rsquo;ll be able to go back and see the reasons your mind gave you to start this journey. It will give you motivation.
</li>
<li dir="ltr" aria-level="1">
If you fail in any of your decisions, you&rsquo;ll have your reasons why it happened. And what was wrong and how to learn from this decision.
</li>
</ol>
Try to implement these things in your life.These habits will help you become more purpose driven and confident in your life and You&rsquo;ll complain less about yourself. You will feel grateful for what you have and value yourself.
&nbsp;

Everybody is so busy competing with their competitors that they forget that they are human beings and they also have a life, and instead of running a race they can actually enjoy the journey.

Change your life in 2023!!!!!!

<img src="media/blogs/android_setting_1.jpg" alt="" width="322" height="570">
We rely so much on our smartphones that we end up becoming irresponsible and giving a lot of information to the apps which they don&rsquo;t actually need. And this can be very very dangerous for us. Giving apps permission to invade your phone which is not even needed for them is the worst thing.&nbsp;
Here are the 5 android settings which you need to turn off right away.
&nbsp;
<h3 dir="ltr" role="presentation">Bluetooth and wifi scanning:</h3>
It keeps scanning for every wifi router,public hotspot,and bluetooth which makes our phone very much vulnerable to be scanned by hackers. So turn it off right away. To turn it off:
<h5 dir="ltr">Go to settings &rarr; Location &rarr; Location services &rarr; Wi-Fi andBluetooth scanning&rarr; turn it off.</h5>
<h3 dir="ltr" role="presentation">Personalized ads:</h3>
Ever wondered, whenever you are talking to your friends or family about a product, and soon after that you get to see ads of the exact same product on your phone? Yes your phone has that permission to invade into your conversation and know your interest. So turn it off by:
<h5 dir="ltr">Settings&rarr; Google &rarr; Manage your google account &rarr;Data and privacy &rarr; turn off personalized ads.</h5>
<h3 dir="ltr" role="presentation">Location history:</h3>
Your phone tracks your location continuously and keeps a log of wherever you go whatever you do. It has every bit of record since the day you are using your phone. Your phone knows where you were three years ago Sunday evening, which definitely can be very very harmful for you.
You can turn it off:
<h5 dir="ltr">Go to settings &rarr;Location &rarr; Location services &rarr; Google Location History &rarr; Turn off (or you can also set it to auto delete after a particular time period).</h5>
<h3 dir="ltr" role="presentation">Location permission for apps</h3>
Most of the apps don&rsquo;t need to know your precise location to run. So don&rsquo;t give location permission to your apps which don't need it. And the one that needs it, you can choose to allow it only the time the app is actually working. It should not have the permission to track your location forever.
To close it:
<h5 dir="ltr">Settings &rarr;apps &rarr;app management /app settings &rarr; turn off location permissions for apps which don&rsquo;t need it.</h5>
<h3 dir="ltr" role="presentation">Crucial notification showing on the lock screen:</h3>
Most people take it very lightly and they don&rsquo;t hide the content of sensitive information from their lock screen. So even if your phone is locked, anybody can read your emails, your bank transaction messages, your OTPs and many more sensitive things.
To turn it off:
<h5 dir="ltr">Settings &rarr;Notifications &rarr; Notification Lock screen&rarr; Hide content.</h5>
Go ahead and turn it off right away to save a bit of your data.

We rely so much on our smartphones that we end up becoming irresponsible and giving a lot of information to the apps which they don’t actually need. And this can be very very dangerous for us. Giving apps permission to invade your phone which is not even needed for them is the worst thing.  Here are the 5 android settings which you need to turn off right away.

5 Android settings you should turn off right now!!!!!

<img src="media/blogs/identity_theft_1.jpg" alt="" width="488" height="345">
Identity theft is deliberate use of somebody's personal information such as their name, date of birth, social security number, driver's license number, bank account or credit card numbers,Pins,electronic signatures, fingerprints, passwords, or any other information that can be used to access a person's financial resources, without their permission, to commit fraud or other crimes.
Identity theft may be used to facilitate or fund other crimes including Illegal immigration, terrorism, phishing and espionage. There are cases of identity cloning to attack payment systems, including online credit card processing and medical insurance
It's a global problem, approximately millions of identities are stolen every year which leads to financial loss of billions of dollars.
The U.S. Federal Trade Commission (FTC) received more than 5.88 million fraud reports in 2021, a 19% increase from the year prior. Reports of associated financial losses topped $6.1 billion, an increase of more than 77% compared with 2020.
In the first half of 2022, identity theft complaints across the country slowed somewhat compared with their pace during the first half of 2021. According to the FTC, Credit card-related fraud is once again the most common type of fraud now that the wave of government-benefits fraud in 2020 and 2021 has subsided.
<h3 dir="ltr">How does identity theft happen?</h3>
<ol>
<li dir="ltr" aria-level="1">
Phishing: Phishing is a practice of sending emails&nbsp; pretending to be from reputable companies such as a bank or an online retailer in order to induce individuals to reveal personal information, such as passwords and credit card numbers by clicking a link or opening an attachment.
</li>
<li dir="ltr" aria-level="1">
Smishing: Similar to phishing, smishing is a practice of sending text messages&nbsp; pretending to be from reputable companies such as a bank or even friends in order to induce individuals to reveal personal information that can be used to commit crimes
</li>
<li dir="ltr" aria-level="1">
Vishing: Similar to phishing and smishing, vishing is a practice of voice calling people to give them fake offers on different products to prompt victims into giving up personal information.
</li>
<li dir="ltr" aria-level="1">
Fake Websites: Fake websites often look like legitimate and trustworthy sites to make people more apt to provide their personal information. Some online shopping scams use a bogus website or mobile app that mimics a trusted retailer, including a familiar logo and similar URL. Purchases made on these fraudulent sites will likely never arrive, or worse, scammers may seed the website with malware that infects the victim&rsquo;s device and harvests personal or financial information.
</li>
<li dir="ltr" aria-level="1">
Data Breaches: Data breach is theft of information of a system or company database without the knowledge or authorisation of systems/companies owner.Stolen data may involve sensitive, proprietary, or confidential information such as credit card numbers, customer data, trade secrets, or matters of national security.
</li>
<li dir="ltr" aria-level="1">
Carelessness of people: Using public wifi/Charging stations or disposing of electronic devices without clearing the data or not protecting their devices with passwords or accidentally downloading any file or attachment from the internet or uploading the image of their driving license or flight tickets on social media may cause identity theft.
</li>
</ol>
<h3 dir="ltr">Consequences of Identity Theft?</h3>
Once the personal information is stolen, thieves can use it in many ways to commit crimes. Such as:
<ul>
<li dir="ltr" aria-level="1">
Taking a loan on your information, taking the money from your account.
</li>
<li dir="ltr" aria-level="1">
Buy expensive items.
</li>
<li dir="ltr" aria-level="1">
Taking over existing accounts of yours.
</li>
<li dir="ltr" aria-level="1">
Obtained genuine documents of yours.
</li>
<li dir="ltr" aria-level="1">
Commit serious crimes like murder or money laundring.
</li>
</ul>
<h3 dir="ltr">How to protect yourself from identity theft?</h3>
<ul>
<li dir="ltr" aria-level="1">
Change passwords of your accounts frequently.
</li>
<li dir="ltr" aria-level="1">
Be aware of phishing/smishing/vishing and never share your personal data to scammers.
</li>
<li dir="ltr" aria-level="1">
Wipe of the data completely before disposing of your electronic devices.
</li>
<li dir="ltr" aria-level="1">
Be aware of what you are posting on social media.
</li>
</ul>
By following these steps and being aware you can avoid being a victim of identity theft.
<img src="media/blogs/identity_theft_2.jpg" alt="" width="390" height="260"> 
&nbsp;
 
&nbsp;

Identity theft is deliberate use of somebody's personal information such as their name, date of birth, social security number, driver's license number, bank account or credit card numbers, PINs, electronic signatures, fingerprints, passwords, or any other information that can be used to access a person's financial resources, without their permission, to commit fraud or other crimes.

What is identity theft?

&nbsp;
Shortcuts are everyone&rsquo;s favorite, be&nbsp; it in life or in Keyboard. We don&rsquo;t know about life but we have some amazing shortcut tricks for your keyboard, which are newly introduced in windows 11.
Let's have a look and understand these amazing shortcuts to reduce our finger pain.
<div dir="ltr" align="left">
<table><colgroup><col width="336"><col width="314"></colgroup>
<tbody>
<tr>
<td>
Shortcut key
</td>
<td>
Tasks
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + A
</td>
<td>
It opens up quick settings for you
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + C
</td>
<td>
Open Chat from Microsoft Teams.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + H
</td>
<td>
Launch voice typing.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + K
</td>
<td>
Open Cast from Quick Settings.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + Alt + K
</td>
<td>
Toggle microphone mute in apps that support Call Mute
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + N
</td>
<td>
Open notification center and calendar.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + W
</td>
<td>
Open Widgets.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + Z
</td>
<td>
Open the snap layouts.&nbsp;
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + Alt + Up arrow
</td>
<td>
Snap window in focus to top half of screen. New with Windows 11.
</td>
</tr>
<tr>
<td>
Windows logo key&nbsp; + Alt + Down arrow
</td>
<td>
Snap window in focus to bottom half of screen.
</td>
</tr>
</tbody>
</table>
Do try these shortcuts, these will make your life easy and rapid.
</div>

Shortcuts are everyone’s favorite, be  it in life or in Keyboard. We don’t know about life but we have some amazing shortcut tricks for your keyboard, which are newly introduced in windows 11.  Let's have a look and understand these amazing shortcuts to reduce our finger pain

Amazing Windows key shortcuts in Windows 11

All the newly launched laptops these days have the fingerprint and face lock in it. Due to the ease of access with it, we often forget our password/pin. And then if any day we have to use our pin, we suffer a lot.
And even if you are able to login with your fingerprint/facelock, you will still not be able to reset your password/pin as it will ask for the old password first.
Not to worry, we&rsquo;ve got you covered. If you forgot the password/pin of your laptop but you are able to login with fingerprint, then do this to reset your password:
<h4 dir="ltr">Step 1: Search for command prompt(cmd) in your laptop:</h4>
<img src="media/blogs/Open%20cmd.png" alt="Open_CMD" width="524" height="425">
<h4>Step 2: Right click and Run as administrator</h4>
<img src="media/blogs/Run%20as%20administartor%20(1).png" alt="CMD" width="539" height="446">
<h4 dir="ltr">Step 3: Type the command&nbsp; net user USERNAME&nbsp; PASSWORD</h4>
(USERNAME will be the username in your laptop, PASSWORD will be the new password you want to set)
<img src="media/blogs/Type%20command.png" alt="CMD_Type_command" width="768" height="307">
<h4 dir="ltr">Step 4: Press Enter</h4>
<img src="media/blogs/shortcut.jpg" alt="" width="587" height="343">
You will get a message The command completed successfully.
Your password has changed now.
&nbsp;

All the newly launched laptops these days have the fingerprint and face lock in it. Due to the ease of access with it, we often forget our password/pin. And then if any day we have to use our pin, we suffer a lot. And even if you are able to login with your fingerprint/facelock, you will still not be able to reset your password/pin as it will ask for the old password first.

How to reset an asus laptop password if forgot

<h3>What is the Collection framework in Java?&nbsp;</h3>
Collection&nbsp; of the objects is nothing but the Group of any individual objects which are represented as a single unit is collection.In java, collection represents a group of objects as a single unit.
<h3>Explain the hierarchy of the Collection framework in Java.</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Collection%20Hirearchy.png" alt="Collection_framework_hirearchy" width="848" height="477">
<h3 dir="ltr">What are the advantages of the Collection framework?</h3>
<ul>
<li dir="ltr" aria-level="1">
Reduces programming effort
</li>
<li dir="ltr" aria-level="1">
Increases program speed and quality
</li>
<li dir="ltr" aria-level="1">
Allows interoperability among unrelated APIs
</li>
<li dir="ltr" aria-level="1">
Reduces effort to learn and to use new APIs
</li>
<li dir="ltr" aria-level="1">
Reduces effort to design new APIs
</li>
<li dir="ltr" aria-level="1">
Fosters software reuse
</li>
</ul>
<h3 dir="ltr">Explain the various interfaces used in the Collection framework.</h3>
<ul>
<li dir="ltr" aria-level="1">
Collection&nbsp;
</li>
<li dir="ltr" aria-level="1">
Set&nbsp;
</li>
<li dir="ltr" aria-level="1">
List
</li>
<li dir="ltr" aria-level="1">
Queue
</li>
<li dir="ltr" aria-level="1">
Deque
</li>
<li dir="ltr" aria-level="1">
Map
</li>
<li dir="ltr" aria-level="1">
SortedSet&nbsp;
</li>
<li dir="ltr" aria-level="1">
SortedMap
</li>
</ul>
&nbsp;
<h3 dir="ltr">What are the main differences between array and collection?</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">Array</h3>
</td>
<td>
<h3 dir="ltr">Collection</h3>
</td>
</tr>
<tr>
<td>
Array can only store same type of objects(i.e. Homogeneous objects)
</td>
<td>
Collection can store different types of objects
</td>
</tr>
<tr>
<td>
Arrays don&rsquo;t have any inbuilt methods to be used for different operations like searching, sorting etc
</td>
<td>
Collection framework has different inbuilt methods which can be used for several operations.
</td>
</tr>
<tr>
<td>
Array is static
</td>
<td>
Collection is dynamic
</td>
</tr>
</tbody>
</table>
<h3>ArrayList vs LinkedList&nbsp; vs Vector</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">Array List</h3>
</td>
<td>
<h3 dir="ltr">LinkedList</h3>
</td>
<td>
<h3 dir="ltr">Vector</h3>
</td>
</tr>
<tr>
<td>
The ArrayList class is a resizable array
</td>
<td>
The LinkedList class is a collection which can contain many objects of the same type
</td>
<td>
The Vector class implements a growable array of objects. Like an array, it contains components that can be accessed using an integer index.&nbsp;
</td>
</tr>
<tr>
<td>
ArrayList is not synchronized.
</td>
<td>
LinkedList is not synchronized.
</td>
<td>
Vector is synchronized.
</td>
</tr>
<tr>
<td>
Arraylist is not thread-safe
</td>
<td>
Linkedlist is not thread-safe
</td>
<td>
Vector list is thread-safe
</td>
</tr>
<tr>
<td>
ArrayList is not a legacy class.&nbsp;
</td>
<td>
LinkedList is not a legacy class.
</td>
<td>
Vector is a legacy class.
</td>
</tr>
</tbody>
</table>
<h3>What is the difference between List and Set?</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">List</h3>
</td>
<td>
<h3 dir="ltr">Set</h3>
</td>
</tr>
<tr>
<td>
The List interface in Java provides a way to store the ordered collection which maintains the insertion order. It is a child interface of Collection.
</td>
<td>
Set is an unordered collection which does not preserve the insertion order.
</td>
</tr>
<tr>
<td>
The List can contain duplicate elements
</td>
<td>
Set includes unique items.
</td>
</tr>
</tbody>
</table>
<h3>What is the difference between HashSet and TreeSet?</h3>
</div>
</div>
<h3>&nbsp;</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">HashSet</h3>
</td>
<td>
<h3 dir="ltr">TreeSet</h3>
</td>
</tr>
<tr>
<td>
HashSet is backed by HashMap
</td>
<td>
TreeSet is backed by TreeMap
</td>
</tr>
<tr>
<td>
HashSet performs faster than TreeSet.
</td>
<td>
TreeSet performs slower than HashSet.
</td>
</tr>
<tr>
<td>
HashSet maintains no order
</td>
<td>
TreeSet maintains ascending order.
</td>
</tr>
</tbody>
</table>
<h3>What is the difference between Set and Map?</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">Set</h3>
</td>
<td>
<h3 dir="ltr">Map</h3>
</td>
</tr>
<tr>
<td>
Set contains only values
</td>
<td>
Map contains key and values both.
</td>
</tr>
<tr>
<td>
Set contains only unique values&nbsp;
</td>
<td>
Maps can contain unique Keys with duplicate values.
</td>
</tr>
<tr>
<td>
Set holds a single number of null value
</td>
<td>
Map can include a single null key with n number of null values
</td>
</tr>
</tbody>
</table>
<h3>What is the difference between HashSet and HashMap?</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">HashSet</h3>
</td>
<td>
<h3 dir="ltr">HashMap</h3>
</td>
</tr>
<tr>
<td>
HashSet cannot have any duplicate value
</td>
<td>
HashMap can contain duplicate values with unique keys.
</td>
</tr>
<tr>
<td>
HashSet contains the only single number of null value
</td>
<td>
HashMap can hold a single null key with n number of null values.
</td>
</tr>
<tr>
<td>
HashSet implements Set interface
</td>
<td>
HashMap implements the Map interface
</td>
</tr>
</tbody>
</table>
<h3>&nbsp;What is the difference between HashMap and TreeMap?</h3>
</div>
</div>
</div>
<h3>&nbsp;</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
<h3 dir="ltr">HashMap</h3>
</td>
<td>
<h3 dir="ltr">TreeMap</h3>
</td>
</tr>
<tr>
<td>
HashMap maintains no order
</td>
<td>
TreeMap maintains ascending order.
</td>
</tr>
<tr>
<td>
HashMap can be sorted by Key or value
</td>
<td>
TreeMap can be sorted by Key.
</td>
</tr>
<tr>
<td>
HashMap is implemented by hash table
</td>
<td>
TreeMap is implemented by a Tree structure.
</td>
</tr>
<tr>
<td>
HashMap may contain a null key with multiple null values
</td>
<td>
TreeMap cannot hold a null key but can have multiple null values.
</td>
</tr>
</tbody>
</table>
</div>
<h3 dir="ltr">What is BlockingQueue?</h3>
java.util.concurrent.BlockingQueue is a java Queue. It provides concurrency in the operations like retrieval, insertion, deletion. It supports operations that wait for the queue to become non-empty when retrieving and removing an element, and wait for space to become available in the queue when adding an element.
<h3 dir="ltr">What is the advantage of the Properties file?</h3>
Java Properties files are useful resources to add information in Java. If any information is changed from the properties file, you don't need to recompile the java class. It is used to store information which is to be changed frequently.
<h3 dir="ltr">What is the hashCode() method?</h3>
The hashCode() method is used to generate the hash values of objects.Using these hash values, these objects are stored in Java collections such as HashMap, HashSet and HashTable.
<h3 dir="ltr">What is the Dictionary class?</h3>
The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values. Every key and every value is an object. In any one Dictionary object, every key is associated with at most one value. Given a Dictionary and a key, the associated element can be looked up. Any non-null object can be used as a key and as a value.
These are some most important questions asked from the topic collection framework in java. These will give you a short revision of collection framework.
<h3>&nbsp;</h3>
<h3 dir="ltr">&nbsp;</h3>
<h3>&nbsp;</h3>
</div>

Collection  of the objects is nothing but the Group of any individual objects which are represented as a single unit is collection.In java, collection represents a group of objects as a single unit.

Most asked Collection framework Interview questions

Java is a programming language developed by James Gosling which needs no introduction. JIt is the most loved programming language and always in demand. Knowing java, you can land up a well paying job.
So here are some very important and most asked questions related to Java which can help you crack any interview.
<h3 dir="ltr" role="presentation">What is Java?</h3>
Java is a general purpose,object oriented,platform independent&nbsp; programming language which follows the WORA(Write&nbsp; Once Run Anywhere) concept which means it can be written on any platform and run on any platform.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Java_OZhMzVt.png" alt="Java_logo" width="229" height="129">
<h3 dir="ltr" role="presentation">Difference between JDK,JRE,JVM?</h3>
<div dir="ltr" align="left">
<table><colgroup><col><col><col></colgroup>
<tbody>
<tr>
<td>
JDK is a software development kit that comes with all the required tools libraries for compiling,debugging, testing and executing java programs. Some of these are javac, javadoc,javaw,jdb etc.
</td>
<td>
JRE provides a runtime environment for your program to run.
</td>
<td>
JVM is a Java virtual machine (CPU) which understands the compiled code of java(Bytecode).
 
JVM interprets the code which is already compiled and converted into Bytecode and converts it to machine code.
</td>
</tr>
<tr>
<td>
Java development kit
</td>
<td>
Java runtime environment
</td>
<td>
Java virtual machine
</td>
</tr>
</tbody>
</table>
</div>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Java_config.png" alt="Java_config" width="535" height="301">
<h3 dir="ltr" role="presentation">Unique features of Java?</h3>
<ol>
<li dir="ltr" aria-level="1">
Least undefined behavior/Robust: Java shows very less undefined behaviors, undefined behaviors means behaving in an unexpected way like crash of the program,etc.
</li>
<li dir="ltr" aria-level="1">
Automated Memory management: Java provides us automatic garbage collection support that means it allocates the memory when needed and deallocates when not in use. And this process happens automatically in the background.
</li>
<li dir="ltr" aria-level="1">
Platform Independence: In java, we write the code which basically executes on a java virtual machine and not on any physical machine(and this is the reason for java being slow). And JVM understands the bytecode(code generated by java compiler) which does not depend on any underlying OS or architecture.It will understand the bytecode generated on any machine. So you can compile java code on any OS, and take the bytecode to any other OS and run. This is why java is called platform independent.
</li>
<li dir="ltr" aria-level="1">
Dependency manager: &nbsp;We have tools like maven, gradle which can download dependencies from online repositories. Dependencies help you in reusing code you need, which is already developed by other users in their production, so that you don&rsquo;t have to write the same code again.
</li>
</ol>
<h3 dir="ltr" role="presentation">What is class and object?</h3>
Class: Class is a blueprint&nbsp; of an object which has its own data member(properties) and methods(behavior). In other words, the class contains properties of real objects and functions of real objects(what object can perform).
Object: Object is the real world entity which has its own properties and behavior. Or we can say an object is an instance of class. It will have the same properties and functions which are defined in the class.
<h3 dir="ltr" role="presentation">What are wrapper classes in Java?</h3>
&nbsp;As we know everything in java is in the form of class and objects except primitive data types. So Java introduced a wrapper class to wrap them also with these classes. A wrapper class is a class whose objects&nbsp; wrap/contain primitive data types; these wrapper classes are used to convert primitive data types into their corresponding objects.
<h3 dir="ltr" role="presentation">Why is the Java platform independent?</h3>
As we know, java compiler compiles the code and generates bytecode. Bytecode is a set of instructions a &ldquo;virtual CPU(JVM)&rdquo; requires to run a program. And this is why java is platform independent. You can take the bytecode to any platform and execute if it has JVM. Remember, Bytecode is platform independent, but once the bytecode is converted into machine code by JVM, It is dependent on the platform.
<h3 dir="ltr" role="presentation">Why is Java not 100% Object-oriented?</h3>
Java is not 100% object oriented. Object oriented means everything should be in the form of class and objects which java definitely does.But, Java also supports primitive data types like int, byte, long etc which are not objects. Hence java is not considered as 100% platform independent.
<h3 dir="ltr" role="presentation">What are constructors in Java?</h3>
Constructors are a special method of class which is used to initialize instance members of a class. Constructors have 2 properties,
<ol>
<li dir="ltr" aria-level="1">
It has no return type like methods.
</li>
<li dir="ltr" aria-level="1">
It always has the same name as the class name.
</li>
<li dir="ltr" aria-level="1">
Constructors are of two types: Parameterize and non-parameterize.
</li>
</ol>
<h3 dir="ltr" role="presentation">What is this keyword?</h3>
<ul>
<li dir="ltr" aria-level="1">
This keyword is used to differentiate between local variables and instance variables.
</li>
<li dir="ltr" aria-level="1">
This keyword is used to call a constructor of the same class from another constructor of the same class.
</li>
<li dir="ltr" aria-level="1">
This keyword is used to refer to the current invoking object of the class.
</li>
</ul>
<h3 dir="ltr" role="presentation">What is a super keyword?</h3>
<ul>
<li dir="ltr" aria-level="1">
Super keyword is used to refer to an intermediate parent class instance member.
</li>
<li dir="ltr" aria-level="1">
Super keyword is also used to refer to intermediate parent class methods.
</li>
<li dir="ltr" aria-level="1">
Also super keywords can be used to call intermediate parent class constructor.
</li>
</ul>
<h3 dir="ltr" role="presentation">What are the Memory Allocations available in Java?</h3>
Memory allocation is a process by which computer programs are assigned physical or virtual memory spaces.
In java, memory is divided into 3 types:
<ul>
<li dir="ltr">Stack area: Local variables and reference variables get memory in stack area</li>
<li dir="ltr">Heap area:Objects get memory from heap area</li>
<li dir="ltr">Class area: Static variables and static methods get memory in class area.</li>
</ul>
<h3 dir="ltr" role="presentation">What is a Package?</h3>
Packages are the logical containers which contain classes and interfaces, the packages are used to separate one type of class from another.
<h3 dir="ltr" role="presentation">What is the final keyword?</h3>
<ul>
<li dir="ltr" aria-level="1">
Final keyword is used with a variable to make the value of any variable constant.
</li>
<li dir="ltr" aria-level="1">
Final keyword is used with classes to prevent inheritance. Finals class can not be inherited by any other class.
</li>
<li dir="ltr" aria-level="1">
Final keyword used with the method can prevent overriding of the method.
</li>
</ul>
<h3 dir="ltr" role="presentation">Explain constructor Overloading.</h3>
Whenever there are more than one constructor but the number of arguments or order or type of argument is different in the same class, then it is called constructor overloading.
<h3 dir="ltr" role="presentation">Explain Method Overriding.</h3>
When child class redefines its parent class method, it is called method overriding.
Method overriding is possible only between parent and child class methods.
For overriding, Name and Argument list of the parent and child class method should be the same.
<h3 dir="ltr" role="presentation">Why Pointers is not used in Java?</h3>
Pointers take memory at the runtime to store the references so java don't use pointers to reduce memory consumption.
Also, by using pointers the particular memory area can be accessed directly, which can cause security issues.
<h3 dir="ltr" role="presentation">What are OOPs?</h3>
OOPs are programming paradigms that rely on the concept of classes and objects. OOPs principles are:
<ul>
<li dir="ltr" aria-level="1">
Encapsulation
</li>
<li dir="ltr" aria-level="1">
Inheritance
</li>
<li dir="ltr" aria-level="1">
Polymorphism
</li>
<li dir="ltr" aria-level="1">
Abstraction
</li>
</ul>
<h3 dir="ltr" role="presentation">Explain Inheritance and types of inheritance Java supports.</h3>
The process of acquiring the properties of an object, by another object is called inheritance. In other words, when an object of a class acquires the property of another class is called inheritance.&nbsp;Inheritance helps in reusing the code.
Extend keyword is used for inheriting.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Untitled%20presentation.png" alt="Inheritance" width="475" height="267">
Inheritance types
<ul>
<li dir="ltr" aria-level="1">
Single
</li>
<li dir="ltr" aria-level="1">
Multilevel
</li>
<li dir="ltr" aria-level="1">
Multiple(not supported by java through classes, but is supports through interfaces)&nbsp;
</li>
<li dir="ltr" aria-level="1">
Hierarchical
</li>
<li dir="ltr" aria-level="1">
Hybrid(not supported by java if multiple inheritance is involved)
</li>
</ul>
<h3 dir="ltr" role="presentation">What is a garbage collector?</h3>
The garbage collector is a program that runs in the background at a time interval and tracks the objects in the memory that are not being used by any other part of the program. And when it finds any such object, it reclaims the space being used by that unreferenced object.
<h3 dir="ltr" role="presentation">What is Autoboxing?</h3>
Automatic conversion of primitive types to their corresponding wrapper class objects is called autoboxing.
<h3 dir="ltr" role="presentation">Can we convert wrapper class objects back to primitive types?</h3>
Yes, and this process is called unboxing.
These are some of the crucial questions asked in the interview. This is just a small part,Java is like an ocean. So if you are a beginner and want to learn java from basics to advance, you can head on to our youtube channel&nbsp;<a href="https://www.youtube.com/watch?v=Yy1yx9uTHIs&amp;list=PL0zysOflRCekkNEe4FDmdUN3FATodg3Yf" target="_blank" rel="noopener">Learn Code With Durgesh</a>

Java is a programming language developed by James Gosling which needs no introduction. JIt is the most loved programming language and always in demand. Knowing java, you can land up a well paying job. So here are some very important and most asked questions related to Java which can help you crack any interview.

Most Asked Java Interview Question

<img src="media/blogs/node-js.png" alt="" width="442" height="270">
Using Node Js we can run javascript from outside browser. With the help of node js we can create backend application using javascript.
In this article i am going to show you how to download and install node js in ubuntu machine step by step.
There are different ways to install node js on ubuntu machine. The simplest way to install using command&nbsp;
<pre class="language-markup"><code>apt install nodejs
</code></pre>
but the disadvange of this command is it install old version of node js. so to install latest version we are going to use nvm step by step.
<h2 id="prerequisites">Prerequisites</h2>
This guide assumes that you are using Ubuntu 20.04. Before you begin, you should have a non-root&nbsp;user account with&nbsp;<code>sudo</code> privileges set up on your system.
<h2 id="option-3-installing-node-using-the-node-version-manager">Installing Node Using the Node Version Manager</h2>
To install NVM on your Ubuntu 20.04 machine, visit&nbsp;the project&rsquo;s GitHub page. Copy the&nbsp;<code>curl</code>&nbsp;command from the README file that displays on the main page. This will get you the most recent version of the installation script.
Before piping the command through to&nbsp;<code>bash</code>, it is always a good idea to audit the script to make sure it isn&rsquo;t doing anything you don&rsquo;t agree with. You can do that by removing the&nbsp;<code>| bash</code>&nbsp;segment at the end of the&nbsp;<code>curl</code>&nbsp;command:
<pre class="language-markup"><code>curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh</code></pre>
Take a look and make sure you are comfortable with the changes it is making. When you are satisfied, run the command again with&nbsp;<code>| bash</code>&nbsp;appended at the end. The URL you use will change depending on the latest version of nvm, but as of right now, the script can be downloaded and executed by typing:
<pre class="language-markup"><code>curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash</code></pre>
This will install the&nbsp;<code>nvm</code>&nbsp;script to your user account. To use it, you must first source your&nbsp;<code>.bashrc</code>&nbsp;file:
<pre class="language-markup"><code>source ~/.bashrc</code></pre>
Now, you can ask NVM which versions of Node are available:
<pre class="language-markup"><code>nvm list-remote</code></pre>
<pre class="language-markup"><code>Output
. . .
 v14.16.0 (LTS: Fermium)
 v14.16.1 (LTS: Fermium)
 v14.17.0 (LTS: Fermium)
 v14.17.1 (LTS: Fermium)
 v14.17.2 (LTS: Fermium)
 v14.17.3 (LTS: Fermium)
 v14.17.4 (Latest LTS: Fermium)
 v15.0.0
 v15.0.1
 v15.1.0
 v15.2.0
 v15.2.1
 v15.3.0
 v15.4.0
 v15.5.0
 v15.5.1
 v15.6.0
 v15.7.0
 v15.8.0
 v15.9.0
 v15.10.0
 v15.11.0
 v15.12.0
 v15.13.0
 v15.14.0
 v16.0.0
 v16.1.0
 v16.2.0</code></pre>
Install by typing the version
<pre class="language-markup"><code>nvm install v16.0.2</code></pre>
We can also use different version as well
<pre class="language-markup"><code>nvm list</code></pre>
<pre class="language-markup"><code>nvm install v16.0.0</code></pre>
switch the version
<pre class="language-markup"><code>nvm use v16.0.0
</code></pre>
I hope this guide helps you.
&nbsp;
&nbsp;

Node.js is a JavaScript runtime for server-side programming. It allows developers to create scalable backend functionality using JavaScript, a language many are already familiar with from browser-based web development.

Installing Node on ubuntu Using the Node Version Manager

<img src="media/blogs/tips-for-best-communication.png" alt="Tips for communication" width="320" height="180">
Communication is the most important part of our lives. Our ability to speak out properly represents our personality. And communication skill plays a crucial part in cracking interviews. Communication skills are one of the main qualities interviewers look out for in a candidate. Lack of good communication leads to lack of understanding. And lack of understanding can be a major reason for under performance in your interview.
So, if you&rsquo;re preparing for an interview, here are some important tips which you can follow for a good interview experience:
<h3 dir="ltr">Confidence</h3>
Confidence is the key to representing yourself. Act with enough confidence to convince your interviewer that you are the right fit for the job. Remember there&rsquo;s a fine line between confidence and arrogance , so never over do it.&nbsp; A good vocabulary can help but never choose very complex words.
Sound professional in front of the interviewer.
<h3>Expression and Eye contact</h3>
When anxiety or nervousness takes over during an interview, it starts showing on your face expressions. So try to control your thoughts and keep a calm expression on your face. Also, maintaining good eye contact shows your confidence. So maintain good eye contact and a good expression on your face.
<h3>Listen properly</h3>
Communication not only involves you speaking but you are expected to listen properly. Listening is twice as hard as talking as every good conversation starts with good listening so If you are a good listener who listens to the speaker, then you can be a good speaker too.So Before answering any of the questions, listen properly to the interviewer, let them finish. Then take a pause of a few seconds and then start with your answer.
<h3 dir="ltr" role="presentation">Be specific to the topic(To the point)</h3>
Don&rsquo;t keep on talking if asked any question, be specific to the topic. Back up your answers with facts and examples related to questions, not opinions. Always focus on the key points mentioned in the job expectations. Always keep it fairly short and never give very long answers as it will lose its effectiveness. If you are stretching any answer, make sure you are proving your point in the end with a conclusion. Always give a practical example of the topics.
Never bluff the interviewer on any topic.
<h3 dir="ltr" role="presentation">Body Language</h3>
Body language is the first thing the person sitting in front of you will notice. So prepare yourself and maintain a proper body language like:
<ul>
<li dir="ltr" aria-level="1">
Don&rsquo;t leaning backward/forward too much
</li>
<li dir="ltr" aria-level="1">
Don&rsquo;t Slouch
</li>
<li dir="ltr" aria-level="1">
Don&rsquo;t sit with your legs wide apart
</li>
<li dir="ltr" aria-level="1">
Maintain proper eye contact but don&rsquo;t stare
</li>
<li dir="ltr" aria-level="1">
Don&rsquo;t Cross your legs at the thighs
</li>
</ul>
&nbsp;
To improve your communication skill and vocab in the long run,you must Read good English books, professional journals, etc.Always end on a positive note. Remember, the best thing to do is not overdo it. There is a fine line between doing it right and overdoing it. So maintain that gap.
&nbsp;

Communication is the most important part of our lives. Our ability to speak out properly represents our personality. And communication skill plays a crucial part in cracking interviews. Communication skills are one of the main qualities interviewers look out for in a candidate. Lack of good communication leads to lack of understanding

Tips to improve communication skill for interviews

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/c_j1ISpvo.png" alt="C_logo" width="112" height="126">
C language, developed by Dennis Ritchie is the strongest programming language&nbsp; which is the basic stage to start with in any interview. So here are some basic interview questions which can be asked in an interview.
<h3 dir="ltr">What is C language?</h3>
<ul>
<li dir="ltr" aria-level="1">
C is a general-purpose programming language that is extremely popular, simple, and flexible to use.
</li>
<li dir="ltr" aria-level="1">
It is a structured programming language that is machine-independent and extensively used to write various applications, Operating Systems like Windows, and many other complex programs like Oracle database, Python interpreter, and more.
</li>
</ul>
<h3 dir="ltr">Features of C</h3>
<ul>
<li dir="ltr" aria-level="1">
Procedure-based programming language
</li>
<li dir="ltr" aria-level="1">
Simple,easy to learn and use.
</li>
<li dir="ltr" aria-level="1">
Machine Independent or Portable
</li>
<li dir="ltr" aria-level="1">
Fast Speed
</li>
<li dir="ltr" aria-level="1">
Mid-level programming language
</li>
<li dir="ltr" aria-level="1">
structured programming language
</li>
<li dir="ltr" aria-level="1">
Rich Library
</li>
<li dir="ltr" aria-level="1">
Memory Management
</li>
</ul>
<h3 dir="ltr">Basic data types in C</h3>
<ol>
<li dir="ltr" aria-level="1">
int: Stores an integer number
</li>
<li dir="ltr" aria-level="1">
float: Stores a decimal number
</li>
<li dir="ltr" aria-level="1">
double: Stores a decimal number with the highest precision
</li>
<li dir="ltr" aria-level="1">
char: Stores a single character
</li>
<li dir="ltr" aria-level="1">
void: Stores no value
</li>
</ol>
<h3 dir="ltr">Reserved words in C</h3>
Reserved words are something which have been predefined for a particular use, they have special meaning which can not be used for any other work.e.g. &ldquo;Int&rdquo; keyword is used for defining an integer variable. It can not be used for some other purpose.
There are 32 reserved words in C:
<div dir="ltr" align="left">
<table><colgroup><col width="164"><col width="138"><col width="149"><col width="173"></colgroup>
<tbody>
<tr>
<td>
int&nbsp;
</td>
<td>
double
</td>
<td>
switch
</td>
<td>
Char&nbsp;
</td>
</tr>
<tr>
<td>
if
</td>
<td>
short
</td>
<td>
long
</td>
<td>
else
</td>
</tr>
<tr>
<td>
case
</td>
<td>
enum
</td>
<td>
auto
</td>
<td>
typedef
</td>
</tr>
<tr>
<td>
struct
</td>
<td>
unsigned
</td>
<td>
return
</td>
<td>
signed
</td>
</tr>
<tr>
<td>
while
</td>
<td>
for
</td>
<td>
Extern
</td>
<td>
void
</td>
</tr>
<tr>
<td>
union
</td>
<td>
register
</td>
<td>
static
</td>
<td>
continue
</td>
</tr>
<tr>
<td>
default
</td>
<td>
Do&nbsp;
</td>
<td>
sizeof
</td>
<td>
volatile
</td>
</tr>
<tr>
<td>
const
</td>
<td>
float
</td>
<td>
Goto&nbsp;
</td>
<td>
Break&nbsp;
</td>
</tr>
</tbody>
</table>
<h3 dir="ltr">What is Token?</h3>
Tokens are the smallest individual elements of a program, like variables, constants etc.
<h3 dir="ltr">What is recursion?</h3>
Recurrence is something occurring again and again, same way recursion is a process in which the function calls itself again and again. And the function which has recursion is called a recursive function.
<h3 dir="ltr">Why is C called a middle level programming language?</h3>
C is called a mid-level programming language because it binds the low level and high -level programming language. We can use C language as a System programming to develop the operating system as well as an Application programming to generate menu driven customer driven billing systems.
<h3 dir="ltr">Why is C called the mother of all languages?</h3>
Before C language, all the languages were being used for some specific reason,they had their own way of working. When C came, it was the first language which could create anything.&nbsp;Also,today so many languages are derived from the C language.
<h3 dir="ltr">What is malloc() and calloc()?</h3>
malloc () and calloc() both are library functions used for allocation memory on runtime(dynamically).
malloc(): malloc&nbsp; function allocates the memory block of given size and returns the pointer to the beginning of the block. But it doesn&rsquo;t initialize the allocated memory for you. That means when the memory is allocated, it will be containing garbage value in it.So if you try to read the block just after allocation, you will get some garbage value.
calloc():calloc&nbsp; function also allocates memory of given size but it initializes the value with 0 so you will not get garbage value even if you have not stored any value in it.
<h3 dir="ltr">What is a pointer?</h3>
Pointer is a variable that stores the address of a variable containing some value.So, basically a pointer is a variable which stores the address of another variable. Or we can say pointer points to a data type Pointers are also declared with data types depending upon which type of variable&rsquo;s address it needs to store.
<h3 dir="ltr">Why do we need to declare a type of pointer when we are only storing addresses there?</h3>
Pointers always store the address of first byte of any value. Integer takes 4byte and character takes 1 bytes. So when we need to dereference we should know how many bytes we need to free depending upon the datatype.
<h3 dir="ltr">What is Dangling Pointer?</h3>
Pointer is something which points to a memory location which stores a variable. If that variable is deleted without modifying the value of the pointer, then it is called a dangling pointer because now it is pointing to a memory address from where the object is deleted already. 
<h3 dir="ltr">What is dynamic memory allocation?</h3>
When the memory is allocated on the runtime when the program is running, that process is called dynamic memory allocation.&nbsp;malloc(), calloc(), realloc() and free() are the functions used for dynamic memory allocation and deallocation. 
<h3 dir="ltr">What is NULL Pointer?</h3>
Null pointer is a pointer pointing to nothing or a pointer having no address. 
<h3 dir="ltr">What is the Local variable, Global variable and static variable?</h3>
Variables defined inside any function are called local variables, whereas variables defined outside a function are called global variables. Local variables are accessible only in the function but global variables can be accessed from any function of the program.
And static variables contain static values that means that value can not be changed throughout the program. Static variables are declared using the static keyword.
<h3 dir="ltr">Which will execute first x+1 or x++??</h3>
X++ executes faster because x++ is a unary operator and has only one variable whereas in x=x+1 or x+=1 is binary operation which adds overhead; however&nbsp; nowadays in some modern compilers x=x+1 is converted into x++ before compilation to make it efficient.
<h3 dir="ltr">What is typecasting?</h3>
Type casting is the process of converting one datatype to another datatype.
<h3 dir="ltr">What is Array?</h3>
Array is a collection of homogeneous(similar type of) data items. It is a non primitive data type which can store primitive data types like int, char, double etc. 
<h3 dir="ltr">What are pre processors?</h3>
Preprocessors are programs that process the source file and send expanded form of code to the compiler. Preprocessor programs provide preprocessor directives that tell the compiler to preprocess the source code before compiling. All of these preprocessor directives begin with a &lsquo;#&rsquo; (hash) symbol. This includes header files, macro expansions, conditional compilation, and line control. 
<h3 dir="ltr">What are control statements in C?</h3>
Control statements in C are used to control flow of the program. Normally the flow of the program is linear but if we want to control the flow e.g. if we want to execute the 10th row of the program after the 6th row based on some conditions then we will use conditional statements.
 
</div>

C language, developed by Dennis Ritchie is the strongest programming language  which is the basic stage to start with in any interview. So here are some basic interview questions which can be asked in an interview.

Most Asked interview questions for C

<img src="media/blogs/digital-ocean.png" alt="Digital Ocean logo" width="230" height="230">
1. Login to Digital Ocean account
2. Create a project
3. Create a new droplet
Create a new key pair and add to the droplet key section.
When droplet creation finishes then reset the password for root. It is mandatory.
4. Login using the console . I prefer to login using ssh.
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;
<pre class="language-java"><code> ssh -i [filekey] root@ipaddress</code></pre>
&nbsp; &nbsp; &nbsp; &nbsp; 5.&nbsp;&nbsp;&nbsp;&nbsp; Before doing anything run update command:
<pre class="language-markup"><code>sudo apt update</code></pre>
&nbsp;
&nbsp;
<hr>
<h3 dir="ltr">Installing MySQL</h3>
1. After update command run command below
<pre class="language-markup"><code>sudo apt install mysql-server </code></pre>
&nbsp; &nbsp;Press Y if prompted and it will install mysql on the machine
2. Start the mysql server by running the command
<pre class="language-markup"><code>sudo systemctl start mysql.service </code></pre>
3. Check the status all fine or not.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
<pre class="language-markup"><code>sudo systemctl status mysql.service</code></pre>
This is show Active(running) status
&nbsp;
4. Now it's time to configure mysql
5. Alter the root user password&nbsp; first
<pre class="language-markup"><code>sudo mysql

ALTER USER &lsquo;root&rsquo;@&rsquo;localhost&rsquo; IDENTIFIED WITH mysql_native_passowrd BY &lsquo;password&rsquo;</code></pre>
  
6.&nbsp; Type exit.
7. &nbsp;&nbsp;&nbsp;Now Login with root user&nbsp;&nbsp; &nbsp; &nbsp;
<pre class="language-markup"><code>sudo mysql -u root -p </code></pre>
8.&nbsp; Now run mysql secure script
<pre class="language-markup"><code>sudo mysql_secure_installation </code></pre>
Provide the answer of prompted questions
9. Creating a dedicated user so that we can access this user outside the machine also.
<pre class="language-markup"><code>mysql -u root -p

CREATE USER 'username'@'host' IDENTIFIED BY 'password';

GRANT ALL PRIVILEGES ON *.* TO &lsquo;user&rsquo;@'host&rsquo;;

FLUSH PRIVILEGES;

exit</code></pre>
&nbsp;
10. Restart the mysql server so that changes reflect.
<pre class="language-markup"><code>sudo systemctl restart mysql.service</code></pre>
11. Finally done with mysql installation and now we can use mysql.
<hr>
<h3>Let's Connect mysql to our local workbench</h3>
1. First , convert public key to pem
<pre class="language-markup"><code>ssh-keygen -p -m PEM -f [yourpublickey]</code></pre>
Type this command to convert , make sure to&nbsp; backup the key first.
2. Open the workbench and add a new connection.
3.&nbsp; For Connection Name, enter any name you&rsquo;d like that helps you identify the connection you&rsquo;re making later.&nbsp;
4. Change the Connection Method to Standard TCP/IP over SSH.
5. For SSH Hostname, enter your droplet IP address. If your server accepts SSH connections on a different port, enter the IP address, followed by a colon and port number.
6. For SSH Username(root), enter the username you use to log into the server via SSH.
7. For SSH Password, enter the password you use for your SSH user. If you use public keys instead of passwords, select an SSH key for authentication.
8. For MySQL Hostname and MySQL Server Port, use the default values.
<pre class="language-markup"><code>HostName: 127.0.0.1
Port: 3306</code></pre>
9. For Username, enter the MySQL username.
10. For Passwords, you can either enter the password or leave it blank. If you do not store the MySQL password in MySQL Workbench, a prompt will request the password each time you attempt to connect to the database.
11. Choose Test Connection to ensure your settings are correct.
12. Choose OK to create the connection.
Create your database using mysql work now.
<hr>
<h3 dir="ltr">Lets install Java and Deploy Spring boot</h3>
1.On you droplet console type command:
<pre class="language-markup"><code>sudo apt install openjdk-11-jre-headless

sudo apt install openjdk-11-jdk-headless</code></pre>
I am installing java 11&nbsp;
Important: Using above command java 11 get installed but javac is not.
There is no need to install javac because we are going to just run application not compile or build but if you want you can install
2. Build your spring boot application with prod profile and server config details in your properties files.
3. Upload this jar to droplet machine folder using FileZilla in our case we created new folder with projects
4. Now Create two script with following commands.
start.sh
<pre class="language-markup"><code>#!/bin/bash

nohup java -jar /projects/blog-app-apis-0.0.1-SNAPSHOT.jar --spring.profiles.active=prod &gt; /projects/log.txt 2&gt;&amp;1 &amp;

echo $! &gt; /projects/pid.file</code></pre>
stop.sh
<pre class="language-markup"><code>kill $(cat /projects/pid.file)</code></pre>
Important : Change your folders path and filename accordingly.
5. Run start script&nbsp;
<pre class="language-markup"><code>sudo ./start.sh</code></pre>
Congratulation project is now running on you given port in project config file.
You can now test it on&nbsp;
http://ip-adress:portnumber
&nbsp;

Deploying Spring Boot with Mysql on DigitalOcean droplet

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/apss.jpeg" alt="Apps_image" width="600" height="400">
When It comes to student life,it is always very difficult to maintain discipline in life. For waking up on time to make plans for study, everything seems tough to manage. So here we are, with some helpful app suggestions which will make your life easy: 
<h3>Evernote</h3>
Evernote is an app which helps you make notes. You can make notes by adding text, images, audio, scans, PDFs, and documents. This is the best app to keep you organized. You can rank your tasks based on the Priority or by due date. Also you can connect it to the calendar and you can also set reminders for your tasks in case you keep forgetting things.This is a must try app.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Evernote.png" alt="Evernote_icon" width="225" height="225">
<h3 dir="ltr" role="presentation">Google Drive</h3>
You can Safely store your files on google drive and access them from any device. It keeps your files on cloud. You can even keep ppts, docs,photos etc and access them from anywhere. No tension to carry everything handy with you all the time.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Google%20drive.png" alt="Google_drive_logo" width="225" height="225">
<h3 dir="ltr" role="presentation">Alarmy</h3>
Alarmy-Sleep if you can, this challenge is actually true. Best for those students who find it difficult to wake up on time in the morning. The interesting thing is there are several ways to stop the alarm depending upon how tough you are in waking up in the morning, you can choose the option to stop the alarm.
There are several tasks which they call missions in the app, so once you complete the mission then only the alarm will stop. Math is a mission in which you have to solve a few math problems to stop the alarm, and by the time you solve the problems your mind will wake up. You can also choose the difficulty of the math problem. This is the best mission, but other than this there are several other tasks as well which you can do to stop the alarm.
Also there are some paid features which include walking steps in which you have to walk certain steps to stop the alarm.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/alarmy.jpg" alt="Alarmy_logo" width="225" height="225">
<h3 dir="ltr" role="presentation">Office Lens</h3>
Microsoft Lens (formerly Microsoft Office Lens) trims, enhances, and makes pictures of whiteboards and documents readable.
You can use Microsoft Lens to convert images to PDF, Word, PowerPoint, and Excel files, digitize printed or handwritten text, and save to OneNote, OneDrive, or your local device. You can even import images that are already on your device using Gallery. The app also has an auto feature that removes glare and shadows from your images and also allows you to read images that have been taken from a bad angle.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/microsoft%20lens.png" alt="Lens_logo" width="321" height="157">
<h3 dir="ltr" role="presentation">Sleep cycle</h3>
Sleep cycle is a wonderful app which focuses on your sleep cycle. We&nbsp; all know that if somebody wakes us from deep sleep, we feel drowsy all the time. So&nbsp; to solve that issue it analyzes your sleep cycle and wakes you up when you are in a light sleep.It tracks your sleep using your phone so that you start your day feeling energized with this sleep tracker and alarm clock. You will also get detailed reports for your sleeping pattern for the entire sleep time.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/sleep%20cycle_8q8LVPw.jpg" alt="sleep_cycle_logo" width="225" height="225">
<h3 dir="ltr" role="presentation">Calm</h3>
In our life, there are times when we get frustrated from things and need to spend some time with ourselves to solve the problems in our mind. The Calm app is the solution for that,it focuses on mental peace. It helps you in concentration,improves sleep quality,and reduces anxiety. It has Video lessons on mindful movement and gentle stretching and it also has exclusive music to help you focus, relax, sleep and nature scenes and sounds to enjoy while relaxing, sleeping, working or studying.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/calm.jpg" alt="Calm_logo" width="225" height="225">
<h3 dir="ltr" role="presentation">Refme</h3>
RefMe is a very good app where you can search thousands of curated educational resources. You can avoid searching on google every time.If you are writing a research paper, this app will create your reference for you! You can then easily export your references by emailing to yourself or you can also save your citations straight to Evernote, to keep your research, smart and organized..It can scan ISBN barcodes on books and journals and automatically cite those resources and these. citations can be organized into project-specific pages, and you can annotate each citation with quotes and notes.&nbsp;
It also provides a feature called WebClipper, a tool that you can add to your browser's toolbar and click to "clip" websites and automatically cite them in the style of your choice.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/RefMe.png" alt="RefMe_logo" width="201" height="251">
<h3 dir="ltr" role="presentation">Oxford Dictionary</h3>
As the name suggests, it is the mobile version of the known Oxford dictionary. The best part about this app is that it lets you take a picture of a word in order to search for it, so you don&rsquo;t even need to write the spelling. It also has a &ldquo;Word of the day&rdquo; feature in which you receive a word everyday to learn which can help you improve your vocabulary. It is a free app but will have advertisements in it. You can opt for the premium version if you want it ad free.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Oxford.jpg" alt="Oxford_dictionary_logo" width="193" height="261">
<h3 dir="ltr" role="presentation">Motion</h3>
This is an app for planning your day. The app that uses artificial intelligence to plan your day. It takes your meetings, tasks, and projects. And builds the perfect daily schedule so that you don&rsquo;t miss anything in the day. This app claims that by using it you will save 30.3 days each year.It schedules work for you and automatically prioritizes your work. In case the work is not done, it will reschedule it for you.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/motion.png" alt="Motion_logo" width="225" height="225">
<h5 dir="ltr" role="presentation">Omni Calculator</h5>
Omni calculator is an app which calculates every math problem for you. It has 2938 different types of calculators which can calculate anything from finance to health to construction to biology, chemistry,math problems, you can calculate anything.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/omni.jpg" alt="omni_calculator_logo" width="150" height="150">
To be honest,there are several other applications which are very helpful for students and it is not possible to mention all of them here.There are several apps in each category. But these are 10 useful apps which we prefer that can make your life much easier and organized and you don't miss any deadlines as well.

When It comes to student life,it is always very difficult to maintain discipline in life. For waking up on time to make plans for study, everything seems tough to manage. So here we are, with some helpful app suggestions which will make your life easy:

10 most Useful apps for students

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/apple1.jpg" alt="Apple company" width="259" height="194">
Apple is a company which needs no introduction today.Apple was founded in 1976 which 3 co founders started.Steve Jobs,Steve wozniak and Ronald Wayne were the founders but unfortunately Ronald Wayne left the company just after 12 days of the company start. Strange right?
Just like this,here are some interesting facts about apple which will leave you awestruck:
&nbsp;
1.Apple first phone design was in the shape of an apple fruit: Apple originally patented a phone design which was a flip phone of an apple shape but it never made it to the market because of impracticality in implementation.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/first%20iphone.jpg" alt="Apple First iphone" width="465" height="310">
2.Every iphone advertisement has time 09:41 in it: The very first iphone launched by steve job was in 2007 and the time was 09:41 exactly because of that now every iphone advertisement has time set as 09:41 in it.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/iphone.jpg" alt="iphone" width="300" height="168">
3.The first apple logo was featuring Sir Issac Newton in it: Staring but true, the first logo designed by Ronald wayne was featuring Sir Issac Newton sitting under an apple tree and an apple about to fall on their head. It also had a phrase written around the border saying &ldquo;Newton&hellip;A mind forever voyaging through strange seas of thought&hellip;alone.&rdquo;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/apple%20first%20logo.jpg" alt="Apple first logo" width="300" height="168">
4.Steve Jobs switched iphone multiple times during the first presentation due to bugs: The Iphone at that time had so many bugs in it like it was unable to play entire audio or video without&nbsp; crashing. If you sent an email then surfed the web, it would work. Do that step in reverse and it's likely to crash. So all the tasks were planned to perform in a sequence to avoid crashing. Also iphones had only 128MB of memory because of which it was needed to restart the phone to free up RAM very often at this stage.So Jobs switched to second phone while first was being restarted and so on.
5.The Apple I computer went on sale at a price of US $666.66: The very first computer was sold for 666.66USD.This price was set because Steve Wozniak liked repeating digits.&nbsp;
6.Apple name was chosen because Steve liked apples: The name of the company has no fascinating history. The name was given because the founder liked apples.
7.A macbook pro can stop bullets: Strange but true, a macbook pro can stop a .22 Cal and a 9mm handgun.&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/macbook%20pro.jpg" alt="macbook" width="459" height="306">
8. Apple was the only company to use objective-C: When apple bought NEXT, NEXT was using objective C at that time and apple had their own framework COCOA which combined with Objective-c was a great language. Later Apple came up with Swift which also supports almost Objective-C.
9. Apple launched a clothing line called &ldquo;The apple collection&rdquo; in 1986: Yes, Apple launched a clothing brand after Steve Jobs left Apple. It&nbsp; featured sweatshirts, shirts, t-shirts, tracksuits, trucker hats and accessories including belts for men, women as well as kids. But later it was discontinued because of its failure.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/apple%20collection.jpg" alt="The apple collection" width="243" height="258">
10. NEXT was founded by Apple co-founder and CEO Steve Jobs: Due to a power struggle between the executives Steve jobs was expelled from Apple. After which he founded NEXT. Later Apple purchased NeXT in 1997 for $429 million and 1.5 million shares of Apple stock, and Jobs, the Chairman and CEO of NeXT, was given an advisory role at Apple.
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/steve%20jobs.jpg" alt="Steve Jobs" width="286" height="176">
As of today,everybody has this fantasy of having Apple devices at their home.Apple has come a very long way and we hope it will bring more fascinating devices filled with a lot of interesting stories with it.
&nbsp;

Apple is a company which needs no introduction today.Apple was founded in 1976 which 3 co founders started.Steve Jobs,Steve wozniak and Ronald Wayne were the founders but unfortunately Ronald Wayne left the company just after 12 days of the company start. Strange right?  Just like this,here are some interesting facts about apple which will leave you awestruck

10 Facts about Apple Company

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Internship.jpg" alt="hands on laptop" width="612" height="408">
Internships are the most important part of college life nowadays as it gives you a prior sense of how work is done in the companies where you are going to work after placements or how the environment is inside a company. You should always grab internships during your second year or third year of your college and there are multiple reasons for it:
<ul>
<li dir="ltr" aria-level="1">
Best companies like Microsoft,Google offer you PPO(Pre Placement Offer) after your internships if you have given your best in the internship period of time.PPO means you will get a permanent job offer.
</li>
<li dir="ltr" aria-level="1">
Also, the competition is less than placements and the chances are that you can grab a good package job from there as well.
</li>
<li dir="ltr" aria-level="1">
Even if you don&rsquo;t have the PPO,still you will have hands-on experience in your field which will keep you at the top in the list of recruiters during placements.
</li>
<li dir="ltr" aria-level="1">
You will be learning new skills which can be added to your resume and if the internship is done from a very good company then it is cherry on the top.
</li>
</ul>
But, the question arises,should we do paid internships or unpaid internships or should we pay for our internship??
Tip: Never go for a low skill internship or an internship which is irrelevant to your long term Goals.
Always choose internships which teach you skills which you can use in future jobs.
<h3 dir="ltr">What is Paid and Unpaid Internship??</h3>
Paid Internship: Paid internships are those where companies pay you for your skills or the work you are doing for them.These can be the best internships to grab.
Unpaid Internship: Unpaid internships are where you don&rsquo;t get paid for the work. You can choose these internships if the company is good enough or a startup offering you a good skill to work on.As long as these skills on which you will be working are relevant to your long term goals you can grab that internship. For example if you are an engineering student getting an internship for data entry or content writing, you should not take it as they will not help you in future.
&nbsp;
<h3 dir="ltr">Should we pay for our internship???</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Cartoon.jpg" alt="Cartoon" width="327" height="327">
The answer is a big NO! Never ever pay your company for your internship. Good companies which are generating a good amount of revenue will always pay for your skills. And taking money to give you an internship is unethical.
Moral of the story is, you should always grab internships which will teach you a very good skill which will help you in your future jobs. Better to be paid , if not, still you can opt for these.If you mention one or two internships in your resume from a good company, it will help you in many ways.But never choose to pay the company to let you work.&nbsp;
 
&nbsp;

Internships are the most important part of college life nowadays as it gives you a prior sense of how work is done in the companies where you are going to work after placements or how the environment is inside a company.

Should we pay for internships??

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Confused.jpg" alt="Confused_person" width="463" height="347">
If you are a college student looking for suggestions of programming languages to learn,or a working professional or&nbsp; a passionate person about programming,or even no one of these,you should still learn programming languages.
According to Steve Jobs: &ldquo;Everybody in this country should learn to program a computer because it teaches you how to think.&rdquo;
But, the question which always puts you in a dilemma is which language should I learn??? 
To be honest,there is no straight and exact answer to this question.There are so many languages currently in the market and in demand which can pay you well. Every language has its own features,pros and cons.But, to make it easier for you according to your reason for learning programming, we have brought to you the best programming languages you can learn.
<ul>
<li dir="ltr" aria-level="1">
First and foremost, if you are a college student or beginner just starting your journey of learning programming and want to have a solid base which can help you master programming,then you should start with C Programming Language.
</li>
</ul>
<h3 dir="ltr">Python</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Python.jpg" alt="Python_logo" width="144" height="156">
<ul>
<li dir="ltr" aria-level="1">
If you want to opt for something easy,then you can go for the Python language.
</li>
<li dir="ltr" aria-level="1">
It is considered a simple,free, general purpose, high level, interpreted, interactive and object-oriented programming language. It uses English keywords frequently and it has fewer syntactic constructions than other languages.
</li>
<li dir="ltr" aria-level="1">
Its design philosophy emphasizes code readability with its notable use of significant whitespaces.
</li>
<li dir="ltr" aria-level="1">
One of the most versatile programming languages, even if you don&rsquo;t have much experience in programming you can learn it easily. It is suitable for people having no experience in programming as well as professionals.
</li>
<li dir="ltr" aria-level="1">
The average salary of a Python developer of beginner level can be more than 40k.
</li>
</ul>
<div dir="ltr" align="left">
<table style="border-collapse: collapse; width: 100%;" border="1"><colgroup><col style="width: 18.8883%;"><col style="width: 81.1117%;"></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Beginners to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Easy
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
None
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Web development,game development,software development,MA&amp;AI,CAD Applications,Desktop GUI,etc.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
Python ranks 1st in the TIOBE index, a measure of programming language popularity
</td>
</tr>
</tbody>
</table>
<h3>Javascript</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Javascript.png" alt="JavaScript-logo" width="276" height="155">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
If you want to start your programming journey from frontend and slowly move to fullstack then you can opt for Javascript.
</li>
<li dir="ltr" aria-level="1">
JavaScript was originally used for web browser development only to add&nbsp; interaction to customer facing sites&nbsp; like animation etc, but now&nbsp; it is used for server-side website deployments and non-web browser applications as well.&nbsp;
</li>
<li dir="ltr" aria-level="1">
Javascript is often confused with java language but both are different languages although there are few similarities in it.
</li>
<li dir="ltr" aria-level="1">
Most of the popular websites and apps are relying on javascript such as Instagram,Facebook, Twitter, Gmail etc.
</li>
</ul>
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Beginners to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Easy
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
HTML,CSS
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Web development,game development,software development etc.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
It currently stands as most commonly used language in the world
</td>
</tr>
</tbody>
</table>
</div>

<h3 dir="ltr">Kotlin</h3>
&nbsp;<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/kotlin.png" alt="Kotlin-logo" width="212" height="123">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Kotlin was developed by JetBrains in 2011, however the very first official version was released in 2016.
</li>
<li dir="ltr" aria-level="1">
It is interoperable with functional programming languages and Java.
</li>
</ul>
<table style="border-collapse: collapse; width: 99.9725%;" border="1"><colgroup><col style="width: 50%;"><col style="width: 50%;"></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Intermediate to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Medium
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
Preferably java
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Web development,Android app development,Desktop application development etc.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
Popular for android applications
</td>
</tr>
</tbody>
</table>
Java<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Java.png" alt="Java-logo" width="229" height="129">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Java is a general purpose,object oriented,platform independent&nbsp; programming language which follows the WORA(Write&nbsp; Once Run Anywhere) concept which means it can be written on any platform and run on any platform.
</li>
<li dir="ltr" aria-level="1">
Java frameworks such as hibernate,spring are popular among professionals with a large number of open source libraries.
</li>
<li dir="ltr" aria-level="1">
Java offers APIs for different activities like Database connection, networking, XML parsing, utilities, etc.
</li>
<li dir="ltr" aria-level="1">
It is a bit complex but still beginner friendly.
</li>
</ul>
<table style="border-collapse: collapse; width: 99.9725%;" border="1"><colgroup><col style="width: 50%;"><col style="width: 50%;"></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Beginner to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Medium
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
Preferably OOPs
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Web development,Android app development,Desktop application development and Big Data etc.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
One of the most popular language
</td>
</tr>
</tbody>
</table>
<h3 dir="ltr">Swift</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/swift.png" alt="Swift-logo" width="150" height="150">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Swift supports almost everything in the programming language Objective-C, that is C with object concept.
</li>
<li dir="ltr" aria-level="1">
Objective-C was the language used by NEXT(Later bought by Apple) at that time.&nbsp;
</li>
<li dir="ltr" aria-level="1">
So Apple had their own framework called COCOA which combined with Objective-C was a great language.
</li>
<li dir="ltr" aria-level="1">
Later Apple started using Swift so it supports almost Objective-C.
</li>
<li dir="ltr" aria-level="1">
Swift is an open source language and easy to use.
</li>
<li dir="ltr" aria-level="1">
Apps like linked in use swift.
</li>
<li dir="ltr" aria-level="1">
Very fast as compared to objective-C and Python.
</li>
</ul>


<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Beginner to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Easy to Medium
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
Specifically None
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Used for building apps for iOS, Mac, Apple TV, and Apple Watch.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
One of the most popular language
</td>
</tr>
</tbody>
</table>
</div>
<h3>R&nbsp;</h3>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/R.jpg" alt="R_logo" width="155" height="120">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
R is a comprehensive statistical analysis language used for statistics and graphical programming that you can use to clean, analyze, and graph your data and which is easy to code.
</li>
<li dir="ltr" aria-level="1">
R has excellent built-in libraries and framework to develop powerful machine learning algorithms.
</li>
<li dir="ltr" aria-level="1">
Learning R can be a great career choice because as of now there are less people having expertise in it.
</li>
</ul>
It is a cross platform language having OOPs features.
<div dir="ltr" align="left">
<table><colgroup><col><col></colgroup>
<tbody>
<tr>
<td>
Who can learn?
</td>
<td>
Intermediate to advanced
</td>
</tr>
<tr>
<td>
Difficulty
</td>
<td>
Moderate
</td>
</tr>
<tr>
<td>
Prior skills required
</td>
<td>
Specifically None,People with good mathematical skills
</td>
</tr>
<tr>
<td>
Uses
</td>
<td>
Majorly used in data analysis, financial domains, and telecom sectors.
</td>
</tr>
<tr>
<td>
Popularity
</td>
<td>
R ranks 11th in the TIOBE index, a measure of programming language popularity
</td>
</tr>
</tbody>
</table>
</div>
To conclude everything,there are hundreds of languages but there are very few who make it to the list. Every language has its own properties and can be preferred depending upon which field you need to work on and how easy you want it to be.So, choose an area where you want to work, pick up the suitable programming language and give your best to learn it. No matter which language you pick up,code should always be clean and understandable by anyone who is going to maintain it.&nbsp;
Ending with a quote of Rick Osborne who says:
"Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live."
&nbsp;
</div>

There are so many languages currently in the market and in demand which can pay you well. Every language has its own features, pros and cons.

Which Programming Language should I learn in 2023?

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Laptop.jpg" alt="Laptop Image" width="339" height="227">
If&nbsp; you want to learn programming or&nbsp; you are a college student looking for the best value for money laptops for coding, then we have researched and brought to you the best 5 laptops for programming under 50,000.
For programing, few specification on which you should focus on is:
<ol>
<li dir="ltr" aria-level="1">
512GB+ SSD
</li>
<li dir="ltr" aria-level="1">
Processor i5 or ryzen5 and more
</li>
<li dir="ltr" aria-level="1">
Ram 8GB+
</li>
<li dir="ltr" aria-level="1">
Metal Body(Preferable)
</li>
</ol>
Now, it's not like if you buy a laptop having less specification than this,then you will not be able to work. But to make your experience smooth, this is the minimum requirement. Because if the IDE or software is heavy, your system might lag.Suppose you have just started coding and you are buying a laptop, in that case you need to get something which can be compatible for next 5 yrs at least.
So keeping all this in mind, we recommend these 5 laptops to buy:
<h2>1. ASUS Vivobook 15</h2>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/asus_qjV8hLB.jpg" alt="Asus Vivobook 15" width="406" height="211">
&nbsp;
<ul>
<li dir="ltr" aria-level="2">
Screen 15.6 inch
</li>
<li dir="ltr" aria-level="2">
Processor Ryzen7
</li>
<li dir="ltr" aria-level="2">
16GB RAM
</li>
<li dir="ltr" aria-level="2">
512GB SSD
</li>
<li dir="ltr" aria-level="2">
Integrated graphics
</li>
<li dir="ltr" aria-level="2">
1.8kg weight
</li>
<li dir="ltr" aria-level="2">
Windows 11
</li>
<li dir="ltr" aria-level="2">
Finger Print&nbsp;
</li>
<li dir="ltr" aria-level="2">
Battery life Upto 6 hrs
</li>
<li dir="ltr" aria-level="2">Price 46k approx(Prices may vary based upon time) </li>
</ul>
<h2>2. &nbsp;Lenovo IdeaPad Slim&nbsp;&nbsp;</h2>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/lenovo.jpg" alt="Lenovo Ideapad Slim" width="315" height="262">
&nbsp;
<ul>
<li dir="ltr" aria-level="2">
Intel core i3
</li>
<li dir="ltr" aria-level="2">
15.6 inch screen
</li>
<li dir="ltr" aria-level="2">
1.8kg
</li>
<li dir="ltr" aria-level="2">
8GB RAM(Upgradable upto 16GB)
</li>
<li dir="ltr" aria-level="2">
512 GB SSD
</li>
<li dir="ltr" aria-level="2">
Windows 11
</li>
<li dir="ltr" aria-level="2">
Battery life upto 6hr
</li>
<li dir="ltr" aria-level="2">
Intel UHD Graphics
</li>
<li dir="ltr" aria-level="2">
Price 45k approx 
</li>
</ul>
<h2>3. &nbsp;HP 14s</h2>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/hp.jpg" alt="HP 14s Laptop" width="279" height="279">
&nbsp;
<ul>
<li dir="ltr" aria-level="2">
AMD Ryzen 5
</li>
<li dir="ltr" aria-level="2">
8GB RAM
</li>
<li dir="ltr" aria-level="2">
512GB SSD
</li>
<li dir="ltr" aria-level="2">
1.46kg
</li>
<li dir="ltr" aria-level="2">
Radeon Graphics
</li>
<li dir="ltr" aria-level="2">
Windows 11
</li>
<li dir="ltr" aria-level="2">
Backlit keyboard
</li>
<li dir="ltr" aria-level="2">
Alexa inbuilt
</li>
<li dir="ltr" aria-level="2">
14 inches screen
</li>
<li dir="ltr" aria-level="2">Price 48k Approx</li>
</ul>
&nbsp;
<h2>4.&nbsp;HP15s</h2>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/hp15s.jpg" alt="HP 15s Laptop" width="350" height="350">
&nbsp;
<ul>
<li dir="ltr" aria-level="2">
8GB RAM(Expandable upto 16gb)
</li>
<li dir="ltr" aria-level="2">
Intel core i5
</li>
<li dir="ltr" aria-level="2">
1.7kg
</li>
<li dir="ltr" aria-level="2">
Numpad
</li>
<li dir="ltr" aria-level="2">
512GB SSD
</li>
<li dir="ltr" aria-level="2">
32Gb Intel Optane Memory
</li>
<li dir="ltr" aria-level="2">
15.6 inch
</li>
<li dir="ltr" aria-level="2">
Intel Iris Xe Graphic
</li>
<li dir="ltr" aria-level="2">
Alexa inbuilt
</li>
<li dir="ltr" aria-level="2">
Windows 11
</li>
<li dir="ltr" aria-level="2">
Price 50k Approx 
</li>
</ul>
<h2>5.Dell Windows Inspiron 3515</h2>
&nbsp;
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Dell.png" alt="Dell Windows Inspiron" width="249" height="249">
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
5.6 inches FHD Display
</li>
<li dir="ltr" aria-level="1">
AMD Ryzen 5
</li>
<li dir="ltr" aria-level="1">
8GB RAM
</li>
<li dir="ltr" aria-level="1">
512GB SSD
</li>
<li dir="ltr" aria-level="1">
Vega Graphics
</li>
<li dir="ltr" aria-level="1">
1.8Kg
</li>
<li dir="ltr" aria-level="1">
Windows 11
</li>
<li dir="ltr" aria-level="1">
Price 39.6k Approx
</li>
</ul>
&nbsp;
To wrap it up, these are 5 best laptops to go for if you have a budget of 50k, but that doesn't mean you can not program in laptops having specifications less than these. Why these are advisable is, if you are coding, the software will be quite bulky which will take a lot of memory to work on, so less than 8GB ram may cause your IDE to be stuck at some places.
Also, you can go for laptops having SSD+HDD because SSD helps in loading the programs fast but the memory is less. And because we need to store our programs we can opt for a laptop with 256GB SSD+1TB HDD. But SSD less than 256GB might make it slow.
So for a smooth experience in coding,these laptops will be best.
&nbsp;

If  you want to learn programming or  you are a college student looking for the best value for money laptops for coding, then we have researched and brought to you the best 5 laptops for programming under 50,000.

Top 5 Laptops for programing under 50,000

<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/Blockchain.png" alt="Blockchain" width="456" height="190">
Blockchain is a type of shared database that stores data in blocks and these blocks are linked together through cryptography. It stores data electronically in digital format. Blockchains are majorly known because of their role in cryptocurrency systems e.g. Bitcoin &nbsp;for maintaining a secure and decentralized record of transactions.
Blockchain was first outlined by Stuart Haber and W. Scott Stornetta, two researchers who wanted to implement a system where document timestamps could not be tampered with, in 1991. But it was actually implemented in 2009, an anonymous developer named Satoshi Nakamoto created bitcoin using Blockchain and that's when cryptocurrency boomed.
Each block contains some record and this record is connected through a chain. This chain is decentralized which means the access is shared not just with one person, but with entire authority, so it is very difficult to modify the records in the block which makes it reliable.New blocks are always stored linearly and chronologically ,that is, they are always added to the &ldquo;end&rdquo; of the blockchain.
Decentralized blockchains are immutable, which means that the data entered is irreversible. For Bitcoin, this means that transactions are permanently recorded and viewable to anyone.
Each block contains Relevant Information/Data&nbsp;(In Bitcoin&rsquo;s case the relevant information can be from where this is coming and where it will go), Hash (Every block has a unique key/code which is called hash.) Previous block hash. Which helps it in achieving decentralized security and trust in several ways.
<ul>
<li dir="ltr" aria-level="1">
Since every block contains previous block hash, it becomes easy to track the history of the blocks.
</li>
<li dir="ltr" aria-level="1">
The very first block which does not contain the previous block hash is called Genesis Block, which means the very first block.
</li>
<li dir="ltr" aria-level="1">
Decentralized blockchains are immutable, which means that the data entered is irreversible. For Bitcoin, this means that transactions are permanently recorded and viewable to anyone.
</li>
</ul>
<img style="display: block; margin-left: auto; margin-right: auto;" src="media/blogs/What_a_block_contains.png" alt="What a single block contains in blockchain" width="570" height="232">
<h3 dir="ltr">Why is it near to impossible to modify data in blockchain?</h3>
&nbsp;
If we want to change information in any of the blocks, then the hash of that block will be corrupted and then the next block containing the previous block hash will be corrupted and this process will go on till the last block. So all blocks will be corrupted from where you changed the data.Now if you say I can change the hash of all the blocks then that will be near to impossible because it will take a lot of time. If we consider Bitcoin as an example, then in Bitcoin each block takes nearly 10 minutes to change the hash. If there are one crore blocks then it will take forever to change the hash of all the blocks.
Also, one copy of this block chain is always shared with authority people in that network,so even if you change in one copy, the data will still be there in all other copies.
&nbsp;
<h3 dir="ltr">Then how can we change/add data?</h3>
So if you have to change any data block , you need to create that block and&nbsp; share that block with everyone in the authority.Then there will be voting and you need to collect&nbsp; 50% votes in your favor that you want to add a block in the chain. If the majority agrees then that block can be added. This rule is called the consensus rule.
 
<h3 dir="ltr">Uses of Blockchain:</h3>
&nbsp;
1.Cryptocurrency
2. Real estate
3.Hospital Management
4. Banking and Finance
&nbsp;

Blockchain is a type of shared database that stores data in blocks and these blocks are linked together through cryptography.

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