GNU/Linux Ubuntu Installing Oracle JDK Guide
You are Welcome! The Article Presents a Series of Links to Install Oracle-Sun Java Development Kit on Ubuntu GNU/Linux Distribution.
And the Ubuntu Oracle Java JDK Installation includes “Tools for Developing, Debugging, and Monitoring Java Applications”.
Furthermore, the Java OpenJDK (Open Java Development Kit) is the Free and Open Source Implementation of the Java Platform, Standard Edition (Java SE).
Where the Oracle JRE/JDK is based on the OpenJDK Source Code. In Addition, it contains Closed-Source Components.
Especially relevant: Java 13 is the First, Long Term Support Release.