How to Install Java 17 on Ubuntu 22.04

Introduction

Java 17 is the latest Long-Term Support (LTS) release and is widely used by developers, DevOps engineers, and system administrators.
In this guide, you’ll learn how to install and configure Java 17 on Ubuntu 22.04 step by step, including environment variables and optional developer tools like Maven and Gradle.

Step 1: Update Your System

sudo apt update && sudo apt upgrade -y

Step 2: Install OpenJDK 17

sudo apt install openjdk-17-jdk -y

Step 3: Verify Installation

java -version

If the installation is successful, you will see output confirming Java 17.

Step 4: Set JAVA_HOME Environment Variable

It’s a good practice to set the JAVA_HOME variable:

    echo "export JAVA_HOME=$(dirname $(dirname $(readlink -f $(which java))))" | sudo tee -a /etc/profile
    echo "export PATH=$JAVA_HOME/bin:$PATH" | sudo tee -a /etc/profile
    source /etc/profile
    

Step 5: Configure Alternatives (Optional)

If you have multiple versions of Java installed, configure alternatives:

sudo update-alternatives --config java

Step 6: Test JAVA_HOME

echo $JAVA_HOME

Step 7: Install Maven (Optional for Developers)

Maven is a popular build automation tool for Java projects:

sudo apt install maven -y

Step 8: Install Gradle (Optional for DevOps/Automation)

Gradle is widely used for CI/CD pipelines and automation:

sudo apt install gradle -y

Conclusion

You have successfully installed Java 17 on Ubuntu 22.04.
This setup ensures developers, administrators, and DevOps engineers can run modern Java applications smoothly.
For production workloads, setting JAVA_HOME and adding build tools like Maven or Gradle is highly recommended.

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