RootExample.java Source code

Introduction

Here is the source code for RootExample.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 
*/
// RootExample.java
//An example of interacting directly with the JRootPane of a JFrame.
//

import java.awt.Container;

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

public class RootExample {
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JRootPane root = f.getRootPane(); // XXX Pay attention to these
        Container content = root.getContentPane(); // XXX lines. They get more
        content.add(new JButton("Hello")); // XXX explanation in the book.
        f.pack();
        f.setVisible(true);
    }
}