Java Swing Tutorial - Java Rectangle .createUnion (Rectangle2D r)

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Syntax

Rectangle.createUnion(Rectangle2D r) has the following syntax.

public Rectangle2D createUnion(Rectangle2D r)

Example

In the following code shows how to use Rectangle.createUnion(Rectangle2D r) method.

//  w  w w  .  j ava2 s . c o  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);    
    
    System.out.println(r.createUnion(new Rectangle(20, 20,40,40)));
    
    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);
  }
}

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