HelloWorld

package com.xiaodong;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.32 2013-4-10
 * @author Administrator
 *
 */

public class NotHelloWorld {
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				NotHelloWorldFrame frame = new NotHelloWorldFrame();
				frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
				frame.setVisible(true);
			}
		});
	}
}

/**
 * A frame that contains a message panel.
 */
class NotHelloWorldFrame extends JFrame {
	public NotHelloWorldFrame() {
		setTitle("NotHelloWorld");
		setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
		// add panel to frame
		
		NotHelloWorldComponent comp = new NotHelloWorldComponent();
		add(comp);
	}
	
	public static final int DEFAULT_WIDTH = 300;
	public static final int DEFAULT_HEIGHT = 200;
}

/**
 * A component that displays a message. 
 */
 class NotHelloWorldComponent extends JComponent {
	 public void paintComponent(Graphics g) {
		 g.drawString("Not a Hello, World program", MESSAGE_X, NESSAGE_Y);
	 }
	 
	 public static final int MESSAGE_X = 75;
	 public static final int NESSAGE_Y = 100;
 }