Java Installation in Ubuntu Linux Server

Java Installation in Ubuntu Linux Server

Java Installation in Ubuntu Linux Server

 

By default, Ubuntu 18.04 includes OpenJDK version 11,which is an open-source variant of the JRE and JDK.

To install this version, first update the package index with below command.

#sudo apt update

Then execute below commands based on which version you want to install.

#apt install default-jre : For Defauly version.
#apt install openjdk-11-jre-headless : For Java 11
#apt install openjdk-8-jre-headless : For Java 8

Verify the Java installation with below command.
#java -version

To install the JDK, execute the following command, which will also install the JRE.

#sudo apt install default-jdk

Verify that the JDK is installed by checking the version of javac, the Java compiler using below command.

#javac -version

To Install the Open JDK 8, use the below command.

#sudo apt install openjdk-8-jdk

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