Java installation on windows

Setting  Up  JDK On Windows 11: A Step by Step Guide



Introduction : 

The Java Development Kit (JDK), which offers the components required to create, compile, and execute Java applications, is a vital tool for Java developers. We'll guide you through installing JDK and configuring the environment on a Windows 11 computer in this article.

Download and Installation Steps :

Step 1 :  
Go to the download page for Oracle JDK:
Visit the Oracle JDK official download page at : https://www.oracle.com/in/java/technologies/downloads/

Step 2: Accept the License Agreement:

Scroll down to find the list of available JDK versions. Accept the license agreement by clicking on the checkbox next to "Oracle JDK" and choose the appropriate version for your system.

Step 3 : Download the Installer:
 Click on the download link for the installer that matches your operating system. For Windows, it typically has a filename like `jdk-17.0.1_windows-x64_bin.exe`.

Step 4 : Run the Installer:
 Once the download is complete, run the installer. Follow the on-screen instructions to install the JDK. You can choose the default installation path or specify a custom one.

Image Views of Above Steps :



Configuring System Environment Variables :

After installing the JDK, you need to set up the system environment variables to make Java commands accessible from the command line.
 
Step 1: Find the JDK Installation Path: 
Locate the folder where JDK is installed. By default, it is something like :C:\Program Files\Java\jdk-1.8 

Step 2 : Right-click on "My Computer" and select "Properties".


Step 3 : Click on the "Advanced" tab. 


Step 4: Click on the "Environment Variables" button.

Step 5 : Under "System Variables", click on "New".

Step 6: In the "Variable Name" field, type "JAVA_HOME".
In the "Variable Value" field, type the path to the root folder of the Java Development Kit installation on the computer.


Step 7 : Click "OK". 


Testing the Setup :

Now Java Path has been set up. Open the Command prompt and type "javac" In case you have already open up the command prompt, I suggest you to close the existing window and reopen it again.


To ensure that your Java environment is set up correctly, create a simple Java program and compile and run it.

Step 1. Create a Java File:
Open a text editor and create a file named `HelloWorld.java` with the following content:

public class HelloWorld {
       public static void main(String[] args) {
           System.out.println("Hello, World!");
       }
   }

Step 2 : Compile and Run:

Open a command prompt, navigate to the directory containing `HelloWorld.java`, and run the following commands:

javac HelloWorld.java
java HelloWorld

 If everything is set up correctly, you should see the output "Hello, World!".

Congratulations! You have successfully downloaded and set up the JDK on your Windows 11 system. You are now ready to start developing Java applications. 

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