How can I install Java 8 on Ubuntu 20.04/18.04?. How to install Java 8 on Ubuntu 16.04?. It is easy to install Java 8 on Ubuntu 20.04/18.04 & Ubuntu 16.04. As of this writing, the most recent release of Java is version 11. This installation should work flawlessly on your own built PC.
We had done an article on installing Java 11 on Ubuntu:
Java is the most popular class-based object-oriented programming language used mostly for building enterprise applications; both the desktop applications and backend web systems.
Programs written in Java are considered to be portable, scalable and simpler to understand. Java also enjoys a huge community of users both in Github, blogs and Stack Overflow.
Install Java 8 on Ubuntu 20.04/18.04/16.04
You can install Java 8 on Ubuntu 20.04/18.04/16.04 from OpenJDK binaries available on the default upstream repositories. To do this, run the command:
sudo apt install openjdk-8-jdk
Confirm Java Version
$ java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.18.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)
Installing Java 8 from PPA repository – Doesn’t work for Ubuntu 20.04
By using Webupd8 Team’s PPA repository, Java 8 can be installed using apt command. But first, the repository needs to be added to your Ubuntu system.
sudo add-apt-repository ppa:webupd8team/java sudo apt update
When the repository is added, install Java 8 by executing the following command in your terminal.
sudo apt install oracle-java8-installer
To install Java 8 and make the the default on the fly, run the following command instead.
sudo apt install oracle-java8-set-default
Set Default Java version
If you keep switching between different versions of Java, here is a guide for you on how to do it properly.