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 frameNotHelloWorldComponent 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; }