~~~ package gui.a6; import java.awt.*; import javax.swing.*; //文本框和标签 public class Test extends JFrame{ JPanel mb1,mb2,mb3;//面板 JButton an1,an2;//按钮 JLabel bq1,bq2;//标签 JTextField wbk;//文本框 JPasswordField mmk;//密码框 public static void main(String[] args) { Test lx=new Test(); } public Test(){ mb1=new JPanel(); mb2=new JPanel(); mb3=new JPanel(); bq1=new JLabel("用户名"); bq2=new JLabel("密 码"); an1=new JButton("登录"); an2=new JButton("取消"); wbk=new JTextField(10); mmk=new JPasswordField(10); this.setLayout(new GridLayout(3,1)); mb1.add(bq1); mb1.add(wbk); mb2.add(bq2); mb2.add(mmk); mb3.add(an1); mb3.add(an2); this.add(mb1); this.add(mb2); this.add(mb3); this.setTitle("用户登录"); this.setSize(230,150); this.setLocation(300,280); this.setResizable(false); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); } } ~~~