Installing Java Development Kit (JDK)

OpenJDK distributors excluding Oracle link

• OpenJDK: The open-source implementation of the Java Platform, providing core libraries and APIs. It serves as the basis for many Java distributions.

  • Website: openjdk.java.net

• AdoptOpenJDK: A community-driven effort to provide free, open-source OpenJDK binaries for a variety of platforms. It is now part of the Eclipse Adoptium project.

  • Website: adoptopenjdk.net

• Amazon Corretto: Amazon distributes a no-cost, multiplatform, production-ready distribution of OpenJDK, with long-term support.

  • Website: aws.amazon.com/corretto

• Azul Systems: Provides Zulu OpenJDK builds, which are tested, certified, and fully compliant OpenJDK distributions.

  • Website: azul.com/downloads/zulu-community

• Microsoft: Offers OpenJDK builds for Windows, macOS, and Linux, providing binaries through their Azure and other platforms.

  • Website: docs.microsoft.com/java/openjdk/download

Linux (CentOS/RHEL using yum) link

1. Find the OpenJDK version you want to install(we use Open JDK distribution).

     sudo yum search openjdk
     

2. Install OpenJDK JDK:

     sudo yum install -y java-21-openjdk-devel
     

3. Verify Installation:

     java -version
     

4. Shift between versions(like javac)

     update-alternatives --config javac
     

Linux (Ubuntu/Debian using apt) link

1. Find the OpenJDK version you want to install(we use Open JDK distribution).

     sudo apt search openjdk
     

2. Install OpenJDK:

     sudo apt install -y openjdk-21-jdk
     

3. Verify Installation:

     java -version
     

4. Shift between versions(like javac)

     update-alternatives --config javac
     

macOS link

1. Find the OpenJDK version you want to install(we use Open JDK distribution).

     brew search openjdk
     

2. Install Java using Homebrew:

     brew install openjdk@21
     

3. Set Java Home (Optional):

     echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.zshrc
   source ~/.zshre
     

4. Verify Installation:

     java -version
     

Windows link

1. Download JDK:

   • Download the JDK installer from the official Oracle OpenJDK website.

2. Run Installer:

   • Run the downloaded installer and follow the installation wizard instructions.

3. Set Java Environment Variables (Optional):

   • Set JAVA_HOME to the JDK installation directory.
   • Update PATH to include the JDK’s bin directory.

4. Verify Installation:

   • Open Command Prompt and type:

     java -version