This game is a Java clone of an existing classic game Jezzball

This game is a Java clone of an existing classic game Jezzball
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The game begins in a large capture chamber with one ball bouncing around. With a click of the mouse, you can build a new chamber wall and trap the ball(s) in a smaller space. But be careful, if you don't build your wall completely across the chamber before it's hit by a Jezzball, it won't withstand the impact.
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Java 1.4 is required!