listselectionlistenerdemo.java~102~

jbuilder2006一书的所有源代码

package listener;

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

public class ListSelectionListenerDemo extends JFrame implements ListSelectionListener {
  JPanel contentPane = new JPanel();
  //创建滚动框
  JScrollPane jScrollPane1 = new JScrollPane();
  JScrollPane jScrollPane2 = new JScrollPane();
  //创建列表框数据类
  DefaultListModel listData1 = new DefaultListModel();
  DefaultListModel listData2 = new DefaultListModel();
  //创建列表框
  JList jList1 = new JList(listData1);
  JList jList2 = new JList(listData2);
  //创建列表1的数组
  String[] list1Strs = {
      "姓名", "性别", "爱好", "专业"};
  //创建列表2的数组
  String[][] list2Strs = {
      {"小李", "小青", "小吴", "小和", "小许"  , }
      , {"男", "女", "男", "女", "女", "男"}
      , {"滑雪", "保龄球", "跑步", "游泳", "绘画", "网球"}
      , {"英文", "管理", "会计", "数学", "地理", "化学"}
  };

  public ListSelectionListenerDemo() {
    try {
      jbInit();
    }
    catch (Exception e) {}
  }

  public static void main(String[] args) {
    ListSelectionListenerDemo frame = new ListSelectionListenerDemo();
    frame.setVisible(true);
  }

  //窗口关闭时清空内存
  protected void processWindowEvent(WindowEvent e) {
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  private void jbInit() throws Exception {
    contentPane = (JPanel)this.getContentPane();
    setTitle("ListSelectionListner程序演示");
    setSize(new Dimension(420, 330));
    contentPane.setLayout(null);
    //设置滚动框的属性
    jScrollPane1.setBounds(new Rectangle(28, 55, 161, 209));
    jScrollPane2.setBounds(new Rectangle(224, 55, 161, 209));
    //为滚动框加入列表框
    jScrollPane1.getViewport().add(jList1, null);
    jScrollPane2.getViewport().add(jList2, null);
    //为列表框1加入列表接收器
    jList1.addListSelectionListener(this);
    //为列表框1加入数据
    for(int i = 0; i < list1Strs.length; i++){
      listData1.addElement(list1Strs[i]);
    }
    //为面板加入滚动框
    contentPane.add(jScrollPane1, null);
    contentPane.add(jScrollPane2, null);
  }

  //重载列表接收器的事件
  public void valueChanged(ListSelectionEvent e) {
    //取得列表框的选择位置
    int selectedIndex = jList1.getSelectedIndex();
    //清空列表2的内容
    listData2.clear();
    //添加列表2的内容
    for(int i = 0; i < list2Strs[selectedIndex].length; i++){
      listData2.addElement(list2Strs[selectedIndex][i]);
    }
  }
}