Ok, simplest thing would be to play a competition between 4 of your own robots.

Make a "matches" subfolder in your RoboCoder folder (not in the package class folder, but in the root "robocoder" folder. Now run "java GraphicView record x x x x" from the command prompt. x is the 4-digit team number (with 0s on the left to pad). Let it record.... after the timer goes to '0'. Close the window - now run 'java GraphicView play lastmatch'