package cn.edu.xidian.crytoll; import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.GridLayout; import javax.swing.JCheckBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.JLabel; import javax.swing.UIManager; public class CheckBoxArray extends JFrame {     /**      *      */     private static final long serialVersionUID = -5338362310060106193L;     private JPanel contentPane;     private JPanel panel;     /**      * Launch the application.      */     public static void main(String[] args) {         try {             UIManager                     .setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");         } catch (Throwable e) {             e.printStackTrace();         }         EventQueue.invokeLater(new Runnable() {             public void run() {                 try {                     CheckBoxArray frame = new CheckBoxArray();                     frame.setVisible(true);                 } catch (Exception e) {                     e.printStackTrace();                 }             }         });     }     /**      * Create the frame.      */     public CheckBoxArray() {         setTitle("通过复选框控件数组实现添加多个复选框控件");         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);         setBounds(100, 100, 409, 331);         contentPane = new JPanel();         contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));         contentPane.setLayout(new BorderLayout(0, 0));         setContentPane(contentPane);         JLabel label = new JLabel(                 "你的爱好有哪些：");         contentPane.add(label, BorderLayout.NORTH);         contentPane.add(getPanel(), BorderLayout.CENTER);     }     private JPanel getPanel() {         if (panel == null) {             panel = new JPanel();// 创建面板对象             panel.setLayout(new GridLayout(0, 4));// 设置网格布局管理器             // 创建控件文本数组             String[] labels = { "足球", "篮球", "魔术", "乒乓球", "看电影", "魔兽世界", "CS战队",                     "羽毛球", "游泳", "旅游", "爬山", "唱歌", "写博客", "动物世界", "拍照", "弹吉他",                     "读报纸", "飙车", "逛街", "逛商场", "麻将", "看书", "上网看资料", "新闻", "军事",                     "八卦", "养生", "饮茶" };             JCheckBox[] boxs = new JCheckBox[labels.length];// 创建控件数组             for (int i = 0; i < boxs.length; i++) {// 遍历控件数组                 boxs[i] = new JCheckBox(labels[i]);// 初始化数组中的复选框组件                 panel.add(boxs[i]);// 把数组元素（即每个复选框）添加到面板中             }         }         return panel;     } }