Frame的问题???
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class RollWord{
public static void main(String args[]) {
System.out.println("Starting RollWord...");
RollWordFrame mainFrame = new RollWordFrame();
mainFrame.setTitle("RollWord");
mainFrame.setVisible(true);
}
}
class RollWordFrame extends JFrame {
public RollWordFrame()
{
Toolkit kit = Toolkit.getDefaultToolkit();
Dimension screenSize = kit.getScreenSize();
int screenWidth=screenSize.width;
int screenHeight=screenSize.height;
setSize(screenWidth / 2,screenHeight / 2);
setLocation(screenWidth / 4,screenHeight / 4);
}
}
1.为什么我不能将Frame设于屏幕中间???
2.setSize setLocation的区别???
3.screenSize.width 和screenSize.getWidth()有什么区别???