Ballpark is a game that I wrote as my first Java programming exercise back in 1998. It's a game where you have to knock bricks out of a wall with a bat and a ball, like Thro' the Wall for the good old Sinclair ZX Spectrum. But Ballpark is smoother than Thro' the Wall, and you can hit the ball at a more continuous range of angles. You control the bat using the mouse.
Ballpark works either as a Java applet, which you can play on-line if you're using a Java-enabled browser, or as a standalone Java program which you can play offline. Ballpark requires at least Java 1.1, as my supervisor told me to rewrite it to use the Java 1.1 event model.
The current version of Ballpark (1.0) is not what I consider a perfect job. There are some bugs in the game mechanics, and `ghost balls' that appear on the court, which I'm sure you'll discover if you play it long enough :-); also, I'd have liked to have a proper lose-a-life-and-continue sequence when you lose the ball off the bottom of the court. But since I abandoned Ballpark in 1998, I've been too busy with other things to go back and perfect it, so in the end I just decided to release it as it stands! :-)