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public void update(Graphics g)
{
if(offScreenImage == null)
{
offScreenImage = this.createImage(800, 600);
}
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graOffScreen.fillRect(150, 150, 800, 600);
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paint(graOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}
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import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
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