How to Install JDK on Linux: A Step-by-Step Guide

What is the proper procedure for installing JDK on a Linux operating system?

sudo apt update
sudo apt install openjdk-11-jdk

Installing the Java Development Kit (JDK) on a Linux operating system can vary depending on the distribution you are using. This guide provides a detailed, step-by-step approach to ensure a successful installation of JDK on Linux.

# For Ubuntu/Debian based systems:
sudo apt update
sudo apt install openjdk-11-jdk

# For CentOS/RHEL based systems:
sudo yum install java-11-openjdk-devel

# Check Java installation
java -version

Causes

• Incompatibility with existing Java versions
• Incorrect installation steps
• Missing package repositories

Solutions

• Use the package manager specific to your Linux distro
• Follow the official Oracle JDK installation guidelines
• Ensure proper environment variable setup after installation

Mistake: Forgetting to update the package manager before installation.

Solution: Always run 'sudo apt update' or its equivalent before trying to install new packages.

Mistake: Not verifying the installation afterward.

Solution: Use 'java -version' to confirm the installation was successful.

Mistake: Installing the wrong JDK version for the application.

Solution: Ensure you check your application's compatibility with the JDK version before installation.