Another thing: the hour hand stays on the exact number until the next hour arrises. It should pan across from number to number. When it gets close to the next hour, it 'appears' (just looks like) that the time is off an hour.

You could always let the user choose between the 24 time zones, and adjust on choice. Doing that will always make it right. You could also add a button to switch Daylight Savings on and off; but, restrict it to only those time zones that use it.

I must agree that the corners are very glitchy (the ball passes through near the ends of the paddle, where you would [i]expect[/i] the ball to bounce).

Looks like you got it! Good job. How about another challenge? If you are up to it, add a timer and a move counter and display the results after game completion. Maybe even devise a scoring system and display the score also (devising a decent scoring system that works fairly evenly for each level is the challenging part).

A character contains two bytes (or 16 bits). Therefore the limit would be 65'535 (2^16-1). See the page on Primitive data types in the java trails at http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html