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

How to Install Apache Wicket on Gnu/Linux Distros

GNU/Linux Installing Apache Wicket 8 – Step by step Guide

The Guide shows you Step-by-Step How to Install Apache Wicket 8.X Java Framework on GNU/Linux Distributions – Step by step Tutorial.

And Apache Wicket for Linux is a Very Clean Java Framework that use Plain Java for implementing the Dynamic behavior and Plain HTML for maintaining like Layout.

Install Apache Wicket 8 on Linux - Featured

GNU/Linux Install Apache Wicket Guides