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public void update(Graphics g)
{
if(offScreenImage == null)
{
offScreenImage = this.createImage(800, 600);
}
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Color c = graOffScreen.getColor();
graOffScreen.setColor(Color.GREEN);
graOffScreen.fillRect(150, 150, 800, 600);
graOffScreen.setColor(c);
paint(graOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}
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import java.math.BigDecimal;
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