GUI初步

import java.awt.*;


public class FrameDemo {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
           Frame f=new Frame();
           f.setVisible(true);
           f.setLocation(100,100);
           f.setSize(500, 400);
           
           
           f.setLayout(new FlowLayout());
           Button but=new  Button("按钮");
           f.add(but);
           
    }

}