Java Swing Tutorial - Java Rectangle.union(Rectangle r)

Syntax

Rectangle.union(Rectangle r) has the following syntax.

public Rectangle union(Rectangle r)

Example

In the following code shows how to use Rectangle.union(Rectangle r) method.

/*from  w  w  w. j  av a 2s. co  m*/
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JPanel {

  public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    
    Rectangle r = new Rectangle (10,10,50,40);    
    
    r = r.union(new Rectangle(20, 20,60,60));
    
    g2.fill (r);    
  }

  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new Main());

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}