Loading

【Java】javax.swing.JList 练习

 1 import java.awt.event.MouseListener;
 2 import java.awt.event.MouseEvent;
 3 import javax.swing.JList;
 4 import javax.swing.JTextArea;
 5 import java.awt.BorderLayout;
 6 import javax.swing.JFrame;
 7 import javax.swing.event.ListSelectionEvent;
 8 import javax.swing.event.ListSelectionListener;
 9 
10  class ExMyFrame64 extends JFrame implements MouseListener, ListSelectionListener {
11 
12     JList list;
13     JTextArea tArea;
14     String [] course = {"语文","数学","生物","英语"};
15     String [] courseBrief =
16         {
17             "语文是一门语言的艺术教学课程",    
18             "数学是一门数字旅行的交通工具",    
19             "生物是一门人与自然的画卷",    
20             "English is an ABC's Poem"
21         };
22     String [] courseTime = {"08:00", "11:00", "14:00" ,"16:00"};
23     
24     ExMyFrame64(){
25         setSize(400,300);
26         setTitle("JList单击与双击练习");
27         list = new JList(course);
28         tArea = new JTextArea("请选择课程,单击显示课程简介,双击显示课程时间");
29         setLayout(new BorderLayout());
30         
31         this.add(list, BorderLayout.NORTH); this.add(tArea,BorderLayout.CENTER);
32         
33         //list.addActionListener(this); // JList没有addActionListener()方法
34         list.addMouseListener(this);
35         list.addListSelectionListener(this);
36     }
37     
38     @Override
39     public void valueChanged(ListSelectionEvent e) {
40         // TODO Auto-generated method stub
41         // 单击选择事件
42         tArea.setText(courseBrief[list.getSelectedIndex()]);
43     }
44 
45     @Override
46     public void mouseClicked(MouseEvent e) {
47         // TODO Auto-generated method stub
48         //双击选择事件
49         if (e.getClickCount() == 2) {
50             tArea.setText(course[list.getSelectedIndex()] + "的开课时间是 " + courseTime[list.getSelectedIndex()]);
51         }
52     }
53     /* 实现了MouseListener接口需要实现抽象方法 */
54     @Override
55     public void mouseEntered(MouseEvent e) {
56         // TODO Auto-generated method stub
57     }
58     @Override
59     public void mouseExited(MouseEvent e){}
60 
61     @Override
62     public void mousePressed(MouseEvent e) {
63         // TODO Auto-generated method stub
64     }
65 
66     @Override
67     public void mouseReleased(MouseEvent e) {
68         // TODO Auto-generated method stub
69     }
70 
71 }

 

posted @ 2016-03-12 20:20  uzipi  阅读(408)  评论(0)    收藏  举报