文本框和标签

import java.awt.*;
import javax.swing.*;

public class Test extends JFrame{//把需要的组件全部在这里定义
	
	JPanel mb1,mb2,mb3;
	JButton an1,an2;
	JLabel bq1,bq2;
	JTextField wbk;
	JPasswordField mmk; 
	
	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(330,190);
		this.setLocation(350,280);
		this.setResizable(false);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
	}
}