How to Install Java 11 on an AWS EC2 Linux Instance

What are the steps to install Java 11 on an Amazon EC2 Linux instance?

sudo apt update
sudo apt install openjdk-11-jdk -y

Installing Java 11 on an AWS EC2 Linux instance is a straightforward process that involves updating your system's package index and installing the OpenJDK package. Follow the detailed steps below to safely install Java 11 on your EC2 instance.

# Connect to your EC2 instance via SSH
ssh -i your-key.pem ec2-user@your-ec2-public-dns

# Update the package index (for Debian/Ubuntu)
sudo apt update

# Install OpenJDK 11
gsudo apt install openjdk-11-jdk -y

# Verify the installation
java -version

Causes

• The EC2 instance defaults may not have Java installed.
• Different Linux distributions may require different package managers.

Solutions

• Connect to your EC2 instance via SSH.
• Update your package manager's index.
• Install OpenJDK 11 using the appropriate command for your Linux distribution.

Mistake: Forgetting to update the package index before installation.

Solution: Always run 'sudo apt update' or 'yum update' based on your distribution before installing.

Mistake: Not using the correct package manager for the Linux distribution (e.g., using apt on Red Hat-based systems).

Solution: Check your distribution and use the correct package manager (apt, yum, dnf).

Mistake: Insufficient permissions during installation. Running commands without sudo.

Solution: Make sure to prepend your commands with 'sudo' to run them with elevated permissions.