Java tutorial
import java.awt.Graphics; import java.awt.Rectangle; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { public void paint(Graphics g) { Rectangle r = new Rectangle(50, 50, 100, 100); Rectangle r1 = new Rectangle(100, 100, 75, 75); g.drawRect(r.x, r.y, r.width, r.height); g.drawRect(r1.x, r1.y, r1.width, r1.height); Rectangle r2 = r.intersection(r1); System.out.println(r2); g.fillRect(r2.x, r2.y, r2.width, r2.height); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.getContentPane().add(new MainClass()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200, 200); frame.setVisible(true); } }