Installation of JDK, IntelliJ IDEA and JavaFX Scene Builder

Some tools are needed or helpful to program with Java:

1. Install Java SE Development Kit 8u202 installieren
   (This older Version is helpful because the tools for programming graphical user interface GUI with JavaFX are still integrated in this. In newer Versions JavaFX has to be installed separately which is a little tricky.)
   Download jdk-8u202-windows-x64.exe from https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html after accepting the license agreement.
   Install it as an administrator to C:\Program Files\Java
   Unzip C:\Program Files\Java\jdk1.8.0_202\javafx-src.zip to C:\Program Files\Java\jdk1.8.0_202\javafx-src
   
2. Install the IDE IntelliJ IDEA
   (Of course several IDEs for Java programming are available. I have choosen the very modern IntelljJ IDEA in community version which is for free.)
   Download and install it from https://www.jetbrains.com/idea/download/#section=windows.
   
3. Install JavaFX Scene Builder
   (This program is very helpful for simplyfying the creation of a GUI.
   Download it from https://www.oracle.com/technetwork/java/javase/downloads/javafxscenebuilder-1x-archive-2199384.html after accepting the licence agreement and install it.