SimpleLayers.java Source code

Introduction

Here is the source code for SimpleLayers.java

Source

/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly 
*/
// SimpleLayers.java
//A demonstration of the JLayeredPane class.
//

import java.awt.Color;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLayeredPane;

public class SimpleLayers extends JFrame {
    public SimpleLayers() {
        super("LayeredPane Demonstration");
        setSize(200, 150);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        JLayeredPane lp = getLayeredPane();

        // Create 3 buttons
        JButton top = new JButton();
        top.setBackground(Color.white);
        top.setBounds(20, 20, 50, 50);
        JButton middle = new JButton();
        middle.setBackground(Color.gray);
        middle.setBounds(40, 40, 50, 50);
        JButton bottom = new JButton();
        bottom.setBackground(Color.black);
        bottom.setBounds(60, 60, 50, 50);

        // Place the buttons in different layers
        lp.add(middle, new Integer(2));
        lp.add(top, new Integer(3));
        lp.add(bottom, new Integer(1));
    }

    public static void main(String[] args) {
        SimpleLayers sl = new SimpleLayers();
        sl.setVisible(true);
    }
}