$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Java OpenJDK on JRE/JDK on Gnu/Linux Distros

GNU/Linux Installing Java OpenJDK Guide

Hi! The linked Tutorials Show you Step-by-Step How to Install Oracle-Sun Java OpenJDK JRE/JDK on GNU/Linux Distributions.

The OpenJDK (Open Java Development Kit) is a Free and Open Source Implementation of the Java Platform, Standard Edition (Java SE).

Furthermore, the Official Oracle Java JDK/JRE Release is based on the OpenJDK source code. In Addition, it contains Closed-Source Components.

And as a better alternative you may see: How to Install Oracle JDK on Linux

Finally, the Oracle Java JDK is also here proposed as substitute for some OpenJDK Versions.

Java OpenJDK JRE/JDK Installation on GNU/Linux Distributions- Featured

GNU/Linux Distros Java OpenJDK JRE/JDK Installation Guide