NotHelloWorld.java Source code

Introduction

Here is the source code for NotHelloWorld.java

Source

/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)
    
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
    
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
    
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.awt.EventQueue;
import java.awt.Graphics;

import javax.swing.JComponent;
import javax.swing.JFrame;

/**
 * @version 1.32 2007-06-12
 * @author Cay Horstmann
 */
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, MESSAGE_Y);
    }

    public static final int MESSAGE_X = 75;
    public static final int MESSAGE_Y = 100;
}