javac -version Many Java applications require JAVA_HOME . 6.1. Find Java Installation Path dirname $(dirname $(readlink -f $(which java))) Example output: /usr/lib/jvm/java-11-openjdk-11.0.22.0.7-1.el7_9.x86_64 6.2. Set JAVA_HOME Permanently Edit ~/.bashrc or /etc/environment :
sudo yum install java-latest-openjdk Or for the latest JDK:
sudo yum install oraclelinux-release-el8 sudo yum install java-11-oraclejdk-devel For other distributions, download the RPM from Oracle JDK Downloads and install: install java yum
java -version If not installed, you’ll see command not found . List all Java-related packages:
sudo yum update -y : On RHEL 8+ and derivatives, yum is symlinked to dnf . Both commands work interchangeably. 3.2. Check Existing Java Installations Verify if Java is already present: javac -version Many Java applications require JAVA_HOME
sudo yum search openjdk Or search for a specific version:
sudo yum install java-17-openjdk-devel On many systems, you can install the default Java set by the distribution: Set JAVA_HOME Permanently Edit ~/
sudo yum list installed | grep openjdk Remove a specific package: