在本例演示了JTextField，JTextArea，JPasswordField，JCheckBox(复选框按钮)，JRadioButton(下拉列表框组件)，JLabel等基本组件的用法。

需要注意的是：若多个JRadioButton需要归为一组时，需要把这些JRadioButton使用add()方法添加到ButtonGroup中对象。

import java.awt.*;import java.awt.event.*;import javax.swing.*;public class TestRegister extends JFrame {    private static final long serialVersionUID = 1L;    JLabel uname,passwd,confpasswd,sex,utype,like,introduce;    JPasswordField pf1,pf2;    JButton submit,reset;    JTextField tf;    JTextArea intro;    JCheckBox reading,writing,chatting;    JRadioButton m,f;    JComboBox cb;    TestRegister(String name)    {        super(name);        this.setVisible(true);        this.setBounds(400,300,400,400);        this.setLayout(new GridLayout(8,2));        this.addWindowListener(new WindowAdapter()        {            public void windowClosing(WindowEvent e)            {                System.exit(0);            }        });            }    public void init()    {        uname = new JLabel("用户名");        passwd = new JLabel("密码");        confpasswd = new JLabel("确认密码");        sex = new JLabel("性别");        utype = new JLabel("用户类别");        like = new JLabel("爱好");        introduce = new JLabel("简介");                pf1 = new JPasswordField(10);        pf2 = new JPasswordField(10);                submit = new JButton("提交");        reset = new JButton("重置");                tf = new JTextField(10);        intro = new JTextArea(3,10);                reading = new JCheckBox("Reading");        writing  = new JCheckBox("Writing");        chatting = new JCheckBox("Chatting");                m = new JRadioButton("男");        f = new JRadioButton("女");                    cb = new JComboBox();        cb.addItem("管理员");        cb.addItem("会员");        cb.addItem("游客");                ButtonGroup bg = new ButtonGroup();        bg.add(m);        bg.add(f);                JPanel p1 = new JPanel();        p1.add(m);        p1.add(f);                JPanel p2 = new JPanel();        p2.add(reading);        p2.add(writing);        p2.add(chatting);                JPanel p3 = new JPanel();        JPanel p4 = new JPanel();        p3.add(submit);        p4.add(reset);                this.add(uname);        this.add(tf);        this.add(passwd);        this.add(pf1);        this.add(confpasswd);        this.add(pf2);        this.add(sex);        this.add(p1);                this.add(utype);        this.add(cb);        this.add(like);        this.add(p2);                this.add(introduce);        this.add(intro);        this.add(p3);        this.add(p4);                    this.pack();    }    public static void main(String[] args) {        new TestRegister("user Register").init();    }}

运行结果：