Starting with using JavaFX. Need to Download from here.
after Running the program with the Class ./src/PhysicsEngine/StartPhysicsEngine
export PATH_TO_FX="[path-to-downloads]/javafx-sdk-12.0.1/lib"
javac --module-path $PATH_TO_FX StartPhysicsEngine.java
java --module-path $PATH_TO_FX Main The Program will run following that, and that solely with the Vector3dInterface. The Output of the physics engine is in vector 3d and is passed to the Visual part of the program. The Visualization is using the StepSize multiplier to have the planets and spacecraft move.