MGX requires a working Java Development Kit (JDK) to be installed on the computer. Typically,
Java is already installed on most systems or can be obtained free of charge from
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html.
The installed Java version can be checked e.g. at
http://www.java.com/de/download/installed.jsp.