How To Install Java on CentOS, Rocky Linux, RHEL, and Fedora

How To Install Java on CentOS, Rocky Linux, RHEL, and Fedora

How To Install Java on CentOS, Rocky Linux, RHEL, and Fedora

Java is a popular programming language that is widely used in the development of applications, websites, and mobile apps. If you are a developer or someone who uses Java applications, you may need to install Java on your Linux machine.

In this tutorial, we will show you how to install Java on CentOS, Rocky Linux, RHEL, and Fedora.

Step 1: Check Java Version

Before installing Java on your machine, you should check whether it is already installed or not. You can do this by running the following command:

java -version

If Java is already installed, you will see the version number. If it is not installed, you will see an error message.

Step 2: Add Java Repository

CentOS, Rocky Linux, RHEL, and Fedora use the Yum package manager to install software packages. To install Java, you need to add the Java repository to the Yum repository list. You can do this by running the following command:

sudo yum install java-latest-openjdk-devel

Step 3: Verify Installation

After installing Java, you should verify that it has been installed correctly. You can do this by running the following command:

java -version

This command will display the version of Java that has been installed on your machine.

Step 4: Set Java Environment Variables

After installing Java, you need to set the environment variables to use it. You can do this by running the following commands:

export JAVA_HOME=/usr/lib/jvm/java-latest-openjdk export PATH=$JAVA_HOME/bin:$PATH

Step 5: Test Java Installation

Finally, you can test the Java installation by running a simple Java program. Create a file named "HelloWorld.java" with the following content:

public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, World!"); } }

Save the file and compile it by running the following command:

javac HelloWorld.java

After compiling the program, you can run it by running the following command:

java HelloWorld

If everything is working correctly, you should see the message "Hello, World!" displayed in the terminal.

Conclusion

Installing Java on CentOS, Rocky Linux, RHEL, and Fedora is a straightforward process. By following the steps outlined in this tutorial, you can quickly install Java and start using it for your development needs.

Keywords: Java, installation, CentOS, Rocky Linux, RHEL, Fedora, Yum, package manager, environment variables, programming, development.

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