RootExample2.java Source code

Introduction

Here is the source code for RootExample2.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 
*/
// RootExample2.java
//Another example of interacting with the root pane. We set the menubar
//for the frame directly through the root pane in this example.
//

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

public class RootExample2 {
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JRootPane root = f.getRootPane();

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

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

        // Display the UI
        f.pack();
        f.setVisible(true);
    }
}