Installing Java Development Kit (JDK)

Installing Java Development Kit (JDK) on Windows:

Step 1: Download JDK for Windows:

• Visit the official Oracle website or an authorized distributor.

• Choose the appropriate version for Windows and click on the download link.

• Run the downloaded installer (usually a .exe file).

Step 2: Run the Installer:

• Double-click the downloaded .exe file to run the installation wizard.

• Follow the on-screen instructions. You might need administrative privileges to install the JDK.

Step 3: Set Environment Variables:

• After installation, set the JAVA_HOME environment variable.

  • Right-click on 'This PC' or 'My Computer' and select 'Properties.'

  • Click on 'Advanced system settings.'

  • Click 'Environment Variables.'

  • Under 'System Variables,' click 'New' and add JAVA_HOME as the variable name and the JDK installation path as the variable value (e.g., C:\Program Files\Java\jdk1.8.0_221).

  • Find the 'Path' variable in the 'System Variables' section and click 'Edit.' Add %JAVA_HOME%\bin at the end of the variable value.

Step 4: Verify Installation:

• Open Command Prompt and type java -version. It should display the installed Java version to confirm the successful installation.

Installing Java Development Kit (JDK) on MacOS:

Step 1: Download JDK for MacOS:

• Visit the official Oracle website or use a package manager like Homebrew.

• Download the appropriate .dmg file for MacOS.

Step 2: Run the Installer:

• Double-click the downloaded .dmg file to mount the disk image.

• Drag the JDK package icon to the Applications folder.

• JDK is now installed on your MacOS.

Step 3: Set Environment Variables (Optional):

• MacOS usually sets the necessary environment variables automatically, so manual configuration is often not needed.

Step 4: Verify Installation:

• Open Terminal and type java -version. It should display the installed Java version to confirm the successful installation.

Installing Java Development Kit (JDK) on Linux:

Step 1: Use Package Manager (Example: Ubuntu):

• Open Terminal.

• Update the package index: sudo apt update

• Install JDK: sudo apt install default-jdk

Step 2: Set Environment Variables (Optional):

• Linux systems often set environment variables automatically after installation.

Step 3: Verify Installation:

• Open Terminal and type java -version. It should display the installed Java version to confirm the successful installation.

By following these steps, you can install the Java Development Kit (JDK) on Windows, MacOS, and Linux-based systems, allowing you to develop Java applications on your preferred platform.