Developing Games In Java chapter 2 example not doing as i would have expected

[Neil Cartmell]

Hi i'm not sure if this is really the right forum but as I see the book "Developing Games in Java" mentioned a lot around here i thought someone might be able to help me.

Here is the code that is in Chapter 2.

import javax.swing.JFrame;
import java.awt.Window;
import java.awt.GraphicsEnvironment;
import java.awt.GraphicsDevice;
import java.awt.DisplayMode;


public class SimpleScreenManager {

	private GraphicsDevice device;
	
	public SimpleScreenManager() {
		
		GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();
		device = environment.getDefaultScreenDevice();
	} // end constructor
	
	public void setFullScreen(DisplayMode displayMode, JFrame window) {
		window.setUndecorated(true);
		window.setResizable(false);
		
		device.setFullScreenWindow(window);
		
		try {
			
			if (displayMode != null && device.isDisplayChangeSupported() ) {
				device.setDisplayMode(displayMode);
				
			}
			
		} catch (IllegalArgumentException ex) {
			
		}
	} // end method setFullScreen
	
	public Window getFullScreenWindow() {
		return device.getFullScreenWindow();
	} // end method getFullScreenWindow
	
	public void restoreScreen() {
		Window window = device.getFullScreenWindow();
		
		if (window != null) {
			window.dispose();
		}
		
		device.setFullScreenWindow(null);
	} //endmethod restoreScreen
} // end class SimpleScreenManager

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

public class FullScreenTest extends JFrame {
	
	private static final long DEMO_TIME = 5000;
	
	public static void main(String[] args) {
		
		DisplayMode displayMode;
		
		if (args.length == 3) {
			displayMode = new DisplayMode(
				Integer.parseInt(args[0]),
				Integer.parseInt(args[1]),
				Integer.parseInt(args[2]),
				DisplayMode.REFRESH_RATE_UNKNOWN);
		
		} else {
			displayMode = new DisplayMode(800, 600, 16,
				DisplayMode.REFRESH_RATE_UNKNOWN);
		}
		
		FullScreenTest test = new FullScreenTest();
		test.run(displayMode);
	} // end main
	
	public void run(DisplayMode displayMode) {
		
		setBackground(Color.blue);
		setForeground(Color.white);
		setFont(new Font("Dialog", Font.PLAIN, 24));
		
		SimpleScreenManager screen = new SimpleScreenManager();
		
		try {
			screen.setFullScreen(displayMode, this);
			
			try {
				Thread.sleep(DEMO_TIME);
			} catch (InterruptedException ex) { }
		
		} finally {
			screen.restoreScreen();
		}
	} // end method run
	
	public void paint(Graphics g) {
		g.drawString("Hello World!", 20, 50);
	} // end method paint
} // end class FullScreenTest

Basically it's just to teach you how to have a program be full screen, which is something I have not done before. The only thing that is different to what i expect are the colors of the screen when th program is running. In the run() method of class FullScreenTest is says this...

 setBackground(Color.blue);  
 setForeground(Color.white);  

But the screen color turns out being black. Even if i switch the colors around it makes no difference. Should the color not be white? I know the book is pretty old so is there something else i have to now to change the foreground color?

[vinaykumar jg]

Hey dude,

First of all , If your expectation is only on the full screen and the background color let me know. Ill get you another code that does your need.