监听JList列表项的单击事件

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

import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class SelectEventDemo extends JFrame {
    
    
    private static final long serialVersionUID = -5544682166217202148L;
    private JPanel contentPane;
    private JList list;
    private JLabel label;
    
    
    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 {
                    SelectEventDemo frame = new SelectEventDemo();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
    
    
    public SelectEventDemo() {
        setTitle("监听列表项选择事件");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 400, 200);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        contentPane.setLayout(new BorderLayout(0, 0));
        setContentPane(contentPane);
        
        label = new JLabel(" ");
        contentPane.add(label, BorderLayout.SOUTH);
        
        JScrollPane scrollPane = new JScrollPane();
        contentPane.add(scrollPane, BorderLayout.CENTER);
        
        list = new JList();
        list.addListSelectionListener(new ListSelectionListener() {
            public void valueChanged(ListSelectionEvent e) {
                do_list_valueChanged(e);
            }
        });
        scrollPane.setViewportView(list);
        
        String[] listData = new String[7];
        listData[0] = "《诛仙》";
        listData[1] = "《流星幻剑》";
        listData[2] = "《终极插班生》";
        listData[3] = "《我的美女大小姐》";
        listData[4] = "《极品家丁》";
        listData[5] = "《跨过千年来爱你》";
        listData[6] = "《烈火如歌》";
        list.setListData(listData);
    }
    
    protected void do_list_valueChanged(ListSelectionEvent e) {
        JOptionPane.showMessageDialog(this, "我喜欢的小说：" +list.getSelectedValue(), null, JOptionPane.INFORMATION_MESSAGE);
    }
}