监听JList列表项的单击事件

Posted 2020-09-21 雨巷菰凉

 

原文：http://blog.sina.com.cn/s/blog_5f1bfbd901015d5d.html

 

 1 import java.awt.BorderLayout;
 2 import java.awt.EventQueue;
 3 import javax.swing.JFrame;
 4 import javax.swing.JLabel;
 5 import javax.swing.JList;
 6 import javax.swing.JOptionPane;
 7 import javax.swing.JPanel;
 8 import javax.swing.JScrollPane;
 9 import javax.swing.UIManager;
10 import javax.swing.border.EmptyBorder;
11 import javax.swing.event.ListSelectionEvent;
12 import javax.swing.event.ListSelectionListener;
13 public class SelectEventDemo extends JFrame {
14     
15     
16     private static final long serialVersionUID = -5544682166217202148L;
17     private JPanel contentPane;
18     private JList list;
19     private JLabel label;
20     
21     
22     public static void main(String[] args) {
23         try {
24             UIManager
25                     .setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
26         } catch (Throwable e) {
27             e.printStackTrace();
28         }
29         EventQueue.invokeLater(new Runnable() {
30             public void run() {
31                 try {
32                     SelectEventDemo frame = new SelectEventDemo();
33                     frame.setVisible(true);
34                 } catch (Exception e) {
35                     e.printStackTrace();
36                 }
37             }
38         });
39     }
40     
41     
42     public SelectEventDemo() {
43         setTitle("监听列表项选择事件");
44         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
45         setBounds(100, 100, 400, 200);
46         contentPane = new JPanel();
47         contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
48         contentPane.setLayout(new BorderLayout(0, 0));
49         setContentPane(contentPane);
50         
51         label = new JLabel(" ");
52         contentPane.add(label, BorderLayout.SOUTH);
53         
54         JScrollPane scrollPane = new JScrollPane();
55         contentPane.add(scrollPane, BorderLayout.CENTER);
56         
57         list = new JList();
58         list.addListSelectionListener(new ListSelectionListener() {
59             public void valueChanged(ListSelectionEvent e) {
60                 do_list_valueChanged(e);
61             }
62         });
63         scrollPane.setViewportView(list);
64         
65         String[] listData = new String[7];
66         listData[0] = "《诛仙》";
67         listData[1] = "《流星幻剑》";
68         listData[2] = "《终极插班生》";
69         listData[3] = "《我的美女大小姐》";
70         listData[4] = "《极品家丁》";
71         listData[5] = "《跨过千年来爱你》";
72         listData[6] = "《烈火如歌》";
73         list.setListData(listData);
74     }
75     
76     protected void do_list_valueChanged(ListSelectionEvent e) {
77         JOptionPane.showMessageDialog(this, "我喜欢的小说：" +list.getSelectedValue(), null, JOptionPane.INFORMATION_MESSAGE);
78     }
79 }