RootExample3.java Source code

Introduction

Here is the source code for RootExample3.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 
*/
// RootExample3.java
//Similar to RootExample2, but this version uses the setJMenuBar() method
//from JFrame to attach the menu. No (direct) interaction with JRootPane
//is needed.
//

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;

public class RootExample3 extends JFrame {
    public RootExample3() {
        super("RootPane Menu Demo");
        setSize(220, 100);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        // Create a menu bar
        JMenuBar bar = new JMenuBar();
        JMenu menu = new JMenu("File");
        bar.add(menu);
        menu.add("Open");
        menu.add("Close");
        setJMenuBar(bar);

        // Add a button to the content pane
        getContentPane().add(new JButton("Hello World"));
    }

    public static void main(String[] args) {
        RootExample3 re3 = new RootExample3();
        re3.setVisible(true);
    }
}