GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();

GraphicsDevice gd = ge.getDefaultScreenDevice();

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JWindow;
public class FullScreenTest {
public static void main(String[] args) {
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd = ge.getDefaultScreenDevice();
FullScreenWindow myWindow = new FullScreenWindow();
if ( gd.isFullScreenSupported() )
gd.setFullScreenWindow(myWindow);
else
System.out.println("Unsupported full screen.");
}
static class FullScreenWindow extends JWindow {
public FullScreenWindow() {
this.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent evt) {
quit();
}
});
}
public void quit() {
this.dispose();
}
public void paint(Graphics g) {
g.setFont(new Font("Arial",Font.BOLD,30));
g.setColor(Color.RED);
g.drawString("這是全屏幕模式",100,100);
}
}
}