In this tutorial, we will show you how to install Java on Ubuntu. For those of you who didn’t know, Java is a programming language and computing platform. It was first released by Sun Microsystems in 1995. Many programs and scripts require Java to run it, but usually, Java is not installed by default on a VPS or Dedicated Server.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of Java on Ubuntu Linux.
Install Java on Ubuntu
Step 1. First, make sure that all your system packages are up-to-date by running the following apt commands in the terminal.
sudo apt update sudo apt upgrade
Step 2. Installing Java on the Ubuntu system.
The second step, install java run time using the following command:
sudo apt install default-jre
The third step, install the java development kit
sudo apt install default-jdk
Step 3. Verify Installed Java Version.
Once successfully installation complete, run the following command below to confirm the Java version:
java --version
Result:
java version "1.7.0_55" OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1) OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)
Congratulations! You have successfully installed Java. Thanks for using this tutorial for installing Oracle Java (JRE or JDK) on Ubuntu 20.04 (Focal Fossa) system. For additional help or useful information, we recommend you check the official Java website.