Java之获取屏幕大小并将窗口居中显示!...

import java.awt.Dimension;
 import java.awt.Toolkit;
 import javax.swing.JFrame;
  
 public class getScreenSize {
     
     public static void main(String[] args) {
     
     //获取屏幕大小
     Dimension screenSize =Toolkit.getDefaultToolkit().getScreenSize();
     
     JFrame myJFrame =new JFrame("2011.12.04 Sunday By friendan!");
     myJFrame.setSize(400,300);
     
     //让窗口居中显示 
     myJFrame.setLocation(screenSize.width/2-400/2,screenSize.height/2-300/2);
     
     //...
     myJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     myJFrame.setVisible(true);
     
     }
 }