用户登录

package bbb;
import javax.swing.*;
import java.awt.*;
public class GridLayoutPosion extends JFrame{
    public GridLayoutPosion(){
        Container c=getContentPane();
        c.setLayout(new GridLayout(3,1,20,20));
        JButton b1,b2;
        JLabel l1,l2;
        JTextField t1,t2;
        t1=new JTextField(5);
        t2=new JTextField(5);
        l1=new JLabel("用户名:");
        l2=new JLabel("口令:");
        b1=new JButton("确定");
        b2=new JButton("取消");
        JPanel p1=new JPanel(new GridLayout(1,1,20,20));
        JPanel p2=new JPanel(new GridLayout(2,1,20,20));
        JPanel p3=new JPanel(new GridLayout(3,1,20,20));
        p1.add(l1);
        p1.add(t1);
        p2.add(l2);
        p2.add(t2);
        p3.add(b1);
        p3.add(b2);
        c.add(p1);
        c.add(p2);
        c.add(p3);
        c.setVisible(true);
        c.setSize(300,200);
    }

    public static void main(String[] args) {
        
       new GridLayoutPosion();
    }

}