Processing Front-End for the PID Library

Okey, I think I need the "dummies guide" for this. What you are saying is that I should add the printouts that can be seen in the example program to my own program. Run the program on the Aruino board and then run the Front-End from the terminal. How do I run the program? I'm not that familiar with the pde format. Should I compile it with the normal java compiler (javac)?

And is it only the SerialSend and SerialRecieve functions that I need to add (including calls to them at loop)?

Thanks for all your help.
Regards Flotec