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

How to Install OpenJDK 8 on Gnu/Linux Distros

OpenJDK 8 Linux Installation Guide

Hi! The Tutorial shows you Step-by-Step How to Install OpenJDK 8 in GNU/Linux Distributions.

And the Linux OpenJDK 8 Installation is a Free and Open Source Implementation of the Java Platform Standard Edition.

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

Finally, OpenJDK 8 is the First, Java Long Term Support Release.

Linux OpenJDK 8 Installation Guides