How to Install Java OpenJDK on JRE-JDK on Elementary OS Gnu/Linux

Installing OpenJDK 9

5. E. Java 9 Setup

   OpenJDK 11 Installation.

   • For JRE 9
     Minimal:

     sudo apt install openjdk-9-jre-headless

     With GUI Parts:

     sudo apt install openjdk-9-jre

   • For JDK 9
     Without Graphical Components:

     sudo apt install openjdk-9-jdk-headless

     And All:

     sudo apt install openjdk-9-jdk