java全屏

下面的代码演示了如何让JFrame全屏显示：

 

import javax.swing.JFrame;
import java.awt.Color;
import java.awt.DisplayMode;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.RenderingHints;
import java.awt.Window;
public class FullScreenTest extends JFrame {
	private static final long serialVersionUID = 1L;
	
	public static void main(String[] args) {
//		GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
//		String []s=ge.getAvailableFontFamilyNames();
		FullScreenTest test = new FullScreenTest();
		DisplayMode displayMode = new DisplayMode(1024, 768, 16,
				DisplayMode.REFRESH_RATE_UNKNOWN);
		test.run(displayMode);
	}

	public void run(DisplayMode displayMode) {
		setBackground(Color.BLUE);
		setForeground(Color.WHITE);
		setFont(new Font("Courier New", Font.PLAIN, 24));

		SimpleScreenManager screen = new SimpleScreenManager();
		try {
			screen.setFullScreen(displayMode, this);
			try {
				Thread.sleep(5000);//5秒后退出全屏
			} catch (InterruptedException ex) {
			}
		} finally {
			screen.restoreScreen();
		}
	}

	public void paint(Graphics g) {
		
		if (g instanceof Graphics2D) {
			Graphics2D g2 = (Graphics2D) g;
			g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
					RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
			g2.drawString("hello full screen.", 400, 200);
		}
	}
}

/**
 * The SimpleScreenManager class manages initializing and displaying full screen
 * graphics modes.
 */
class SimpleScreenManager {

	private GraphicsDevice device;

	public SimpleScreenManager() {
		GraphicsEnvironment environment = GraphicsEnvironment
				.getLocalGraphicsEnvironment();
		device = environment.getDefaultScreenDevice();
	}

	
	public void setFullScreen(DisplayMode displayMode, JFrame jFrame) {
		jFrame.setUndecorated(true);
		jFrame.setResizable(false);

		device.setFullScreenWindow(jFrame);
		if (displayMode != null && device.isDisplayChangeSupported()) {
			try {
				device.setDisplayMode(displayMode);
			} catch (IllegalArgumentException ex) {
				// ignore - illegal mode for this device
			}
		}
	}
	
	public Window getFullScreenWindow() {
		return device.getFullScreenWindow();
	}

	public void restoreScreen() {
		Window window = device.getFullScreenWindow();
		if (window != null) {
			window.dispose();
		}
		device.setFullScreenWindow(null);
	}

}