Java 17 is a long-term support (LTS) release that brings numerous enhancements and new features to the Java programming language. This guide will walk you through the steps to install JDK 17 on Debian 11.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo apt update && sudo apt upgrade -y

Step 2: Install Required Dependencies

Install required packages to add a new repository:

sudo apt install software-properties-common -y

Step 3: Add the AdoptOpenJDK Repository

Add the AdoptOpenJDK repository to your system:

sudo add-apt-repository ppa:adoptopenjdk/ppa

Update the package database again:

sudo apt update

Step 4: Install JDK 17

Now, install Java 17 with the following command:

sudo apt install adoptopenjdk-17-hotspot -y

Step 5: Verify the Installation

Check if Java is installed correctly by running:

java -version

You should see the version number of JDK 17 if the installation was successful.

Step 6: Set JAVA_HOME Environment Variable

To set the JAVA_HOME environment variable, add the following lines to your ~/.bashrc file:

echo 'export JAVA_HOME=/usr/lib/jvm/adoptopenjdk-17-hotspot' >> ~/.bashrc
echo 'export PATH=$PATH:$JAVA_HOME/bin' >> ~/.bashrc
source ~/.bashrc

Conclusion

You have successfully installed Java 17 (JDK 17) on Debian 11. This will enable you to develop and run Java applications on your server.

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