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Installing Java Development Kit (JDK) 11 on an Amazon EC2 instance or any Linux-based server is a fundamental step for Java developers. This guide will walk you through the process, from updating your system to verifying your installation.
Step 1: Update Your Linux System
Before installing any new software, it is a best practice to ensure your existing packages are up to date. This minimizes compatibility issues.
sudo yum update sudo yum upgrade
Step 2: Download the JDK 11 Archive
Visit the Oracle JDK 11 download page and locate the Linux 64 compressed archive (ending in .tar.gz). You can download it directly to your server using wget or download it locally and transfer it via WinSCP.
- Using WinSCP: Log in to your EC2 instance and drag the downloaded .tar.gz file into your home directory (e.g.,
/home/ec2-user).
Step 3: Extract JDK to /opt Directory
The /opt directory is a standard location for optional software packages. Extract your archive there:
sudo tar -xvf jdk-11.0.x_linux-x64_bin.tar.gz -C /opt
Verify the extraction by listing the contents of /opt:
ls /opt
Step 4: Set Environment Variables
To make Java available system-wide, you must configure the JAVA_HOME and PATH variables. Open the global profile file:
sudo nano /etc/profile
Scroll to the bottom and add these lines (ensure the path matches your extracted version):
export JAVA_HOME=/opt/jdk-11.0.23 export PATH=$JAVA_HOME/bin:$PATH
Save (Ctrl+X, then Y, then Enter) and refresh your session:
source /etc/profile
Step 5: Verify Installation
Confirm that JDK 11 is correctly installed and active:
java -version javac -version
You should see output indicating "java version 11.x.x".
Conclusion
Congratulations! You have successfully configured JDK 11 on your Amazon EC2 instance. You are now ready to run Java applications or set up a build environment for your projects.
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