OpenJDK is the Open Source implementation of the Java Development Kit while Oracle JDK is the official Oracle version of Java Development Kit.

JDK (Java Development Kit) is what we need to if we have to do some programming or develop software related to Java.

This is all you need if you are not a programmer.

JRE (Java Runtime Environment) is what we would need normally to run a Java-based application.

See the list below which explains each of these packages. We can get Java on Ubuntu via multiple packages. In this section, we will learn how we can install and set the java path variable by using command lines. By the end of this tutorial, you will be able to successfully install java on your local PC. We will learn step by step how to install java on Linux/Ubuntu, Windows, and Mac. In this tutorial, we will get a start to Java by installing it on our local PC. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!. Java is a fast, secure, and reliable programming language.

There are lots of applications and websites that will not work unless you have Java installed. Java is a programming language built for the age of the Internet.

Java is a programming language and computing platform which was first released by Sun Microsystems in 1995. Introduction to Java programming language

Java for linux