Additional, Helpful Sources:
http://stackoverflow.com/questions/6884436/java-using-paintcomponent-for-graphics-calling-functions-from-within
http://stackoverflow.com/questions/13404398/using-paintcomponent-to-draw-rectangle-in-jframe
http://stackoverflow.com/questions/5446396/javax-swing-jpanel-paintcomponent
http://docs.oracle.com/javase/tutorial/uiswing/painting/step2.html