import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class XORRectangles extends JPanel{
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
// using white as the XOR color.
g2.setXORMode(Color.white);
// Paint a red rectangle.
Rectangle2D r = new Rectangle2D.Double(50, 50, 150, 100);
g2.setPaint(Color.red);
g2.fill(r);
g2.transform(AffineTransform.getTranslateInstance(25, 25));
// Draw a blue rectangle.
g2.setPaint(Color.blue);
g2.fill(r);
}
public static void main(String[] args) {
JFrame f = new JFrame();
f.getContentPane().add(new XORRectangles());
f.setSize(300, 200);
f.setVisible(true);
}
}