union.java Source code

Introduction

Here is the source code for union.java

Source

// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski.  Copyright (c) 1997 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;

import javax.swing.JFrame;

public class union extends JFrame {
    Rectangle r = new Rectangle(50, 50, 100, 100);
    Rectangle r1 = new Rectangle(100, 100, 75, 75);

    union() {
        super("Union");
        setSize(250, 250);
    }

    public void paint(Graphics g) {
        g.setColor(Color.lightGray);
        Rectangle r2 = r.union(r1);
        g.fillRect(r2.x, r2.y, r2.width, r2.height);
        g.setColor(Color.black);
        g.drawRect(r.x, r.y, r.width, r.height);
        g.drawRect(r1.x, r1.y, r1.width, r1.height);
    }

    public static void main(String[] args) {
        JFrame f = new union();
        f.setVisible(true);
    }
}