Java获得屏幕分辨率

Java获得屏幕分辨率源代码如下：
 1 public class Screen
 2 {
 3     public static void main(String[] args)
 4     {
 5            int screenWidth=((int)java.awt.Toolkit.getDefaultToolkit().getScreenSize().width);
 6            int screenHeight = ((int)java.awt.Toolkit.getDefaultToolkit().getScreenSize().height); 
 7            System.out.println(screenWidth+""+screenHeight);
 8      }
 9 }
10 class ScreenSize
11 {
12    private int screenWidth;
13    private int screenHeight;
14    public  void setScreenWidth(int screenWidth)
15     {
16         this.screenWidth=screenWidth;
17     }
18    public void setScreenHeight(int screenHeight)
19   {
20        this.screenHeight=screenHeight;
21    }
22    public int getScreenWidth()
23    {
24           setScreenWidth((int)java.awt.Toolkit.getDefaultToolkit().getScreenSize.width);
25           return screenWidth;
26     }
27     public int getScreenHeight()
28     {
29         setScreenHeight((int)java.awt.Toolkit.getDefaultToolkit.getScreenSize().height);
30           return screenHeight;
31      }
32 }