GNU/Linux Installing Java OpenJDK 15 Guide
Hi! The Tutorial Shows You Step-by-Step How to Install Oracle-Sun OpenJDK 15 JRE/JDK on GNU+Linux Distributions.
And OpenJDK for Linux (Open Java Development Kit) is a Free and Open Source Implementation of the Java Platform, Standard Edition (Java SE).
Furthermore, the Oracle Java JDK/JRE is based on the OpenJDK Source Code. In Addition, it contains Closed-Source Components.