一个小问题

闲人

如何让frame在屏幕中间显示??请赐教

cisco

1. 
   
2. import java.awt.Dimension;
   
3. import java.awt.Toolkit;
   
4. import java.awt.event.WindowAdapter;
   
5. import java.awt.event.WindowEvent;
   
6. 
   
7. import javax.swing.JFrame;
   
8. 
   
9. public class CenteredFrame extends JFrame {
   
10.   public CenteredFrame() {
    
11.     setTitle("CenteredFrame");
    
12.     addWindowListener(new WindowAdapter() {
    
13.       public void windowClosing(WindowEvent e) {
    
14.         System.exit(0);
    
15.       }
    
16.     });
    
17.     Toolkit tk = Toolkit.getDefaultToolkit();
    
18.     Dimension screenSize = tk.getScreenSize();
    
19.     int screenHeight = screenSize.height;
    
20.     int screenWidth = screenSize.width;
    
21.     setSize(screenWidth / 2, screenHeight / 2);
    
22.     setLocation(screenWidth / 4, screenHeight / 4);
    
23.   }
    
24. 
    
25.   public static void main(String[] args) {
    
26.     JFrame frame = new CenteredFrame();
    
27.     frame.show();
    
28.   }
    
29. }
    

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闲人

先谢了～～～～～