Frame顶层框架合理大小与图标添加源代码

 1 class SizedFrame extends JFrame
 2 {
 3    public SizedFrame()
 4    {
 5       // get screen dimensions
 6 
 7       Toolkit kit = Toolkit.getDefaultToolkit();
 8       Dimension screenSize = kit.getScreenSize();
 9       int screenHeight = screenSize.height;
10       int screenWidth = screenSize.width;
11       
12 
13       // set frame width, height and let platform pick screen location
14 
15       setSize(screenWidth / 2, screenHeight / 2);
16       setLocationByPlatform(true);
17 
18       // set frame icon
19 
20       Image img = new ImageIcon("icon.gif").getImage();
21       setIconImage(img);      
22       
23    }
24 }