java full screen help
i was reading in sun webpage about java full screen api...i dont think its clear enough and i think it have good examples...
so i tried to practice a bit and tried something wich didnt work
import javax.swing.*;
import java.awt.*;
publicclass FullScreenextends JFrame{
static GraphicsDevice gd;
public FullScreen(){
}
publicstaticvoid main(String[] args){
FullScreen fc =new FullScreen();
try{
gd.setFullScreenWindow(fc);
fc.setVisible(true);
fc.setResizable(false);
fc.setUndecorated(true);
}finally{
gd.setFullScreenWindow(null);
}
}
}
iy gives nullpointer exception , can someone help me, im new in programming, is there is any more info on the web coz as i said before i dont think sun's tutorials are good
[1667 byte] By [
fouadka] at [2007-10-3 4:09:58]
You don't assign to gd anywhere, so it's null. Add GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
gd=ge.getDefaultScreenDevice();
The next problem is that you set fc undecorated after setting it visible, which won't work. So you want import javax.swing.*;
import java.awt.*;
public class FullScreen extends JFrame {
static GraphicsDevice gd;
public FullScreen() {
}
public static void main(String[] args) {
FullScreen fc = new FullScreen();
try{
GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
gd=ge.getDefaultScreenDevice();
fc.setUndecorated(true);
gd.setFullScreenWindow(fc);
fc.setVisible(true);
fc.setResizable(false);
}finally{
gd.setFullScreenWindow(null);
}
}
}
Of course, it will flicker into full screen and then out again because the finally block will be executed. You'll want to remove the finally block and provide some way for the user to leave full screen mode or exit the program entirely.
i tries the code but i still have some minor problems, i still cant get into full screen and the button doesnt show
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class FullScreen extends JFrame implements ActionListener {
static GraphicsDevice gDevice;
public void setUpFullScreenMode() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setBounds(10, 10, 500, 400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel p = new JPanel();
p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
JButton b1 = new JButton("exit");
b1.addActionListener(this);
getContentPane().add(p);
p.add(b1);
}
public static void main(String[] args) {
FullScreen fc = new FullScreen();
GraphicsEnvironment gEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
gDevice = gEnvironment.getDefaultScreenDevice();
fc.setUndecorated(false);
gDevice.setFullScreenWindow(fc);
fc.setVisible(true);
fc.setResizable(false);
}
/**
* Invoked when an action occurs.
*/
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equalsIgnoreCase("exit")) {
System.exit(0);
}
}
}
