2009年6月4日

Java桌面搜索程序部分说明

1.文件后缀搜索用递归方法。
   递归是：笼统的说是对同一个方法的不断调用。

 1private void LookFor(File dir,String yt) {
 2         for(String nm : dir.list()){
 3            File wjhz = new File(dir.getAbsolutePath() + "/" + nm);
 4            if(wjhz.isFile()){
 5                int counter=0;
 6                int error=0;
 7                 String ext = nm.substring(nm.lastIndexOf("."));
 8                 if(yt.equals(ext)){
 9                     counter++;
10                     String first = jEditorPane1.getText();
11                     jEditorPane1.setText(first+"\n"+ counter + wjhz.getName()) ;
12                     String two = jTextPane2.getText();
13                     jTextPane2.setText(two +"\n"+wjhz.getPath());
14                     
15                 }else {
16                     error++;
17                 }
18            }else{
19                LookFor(wjhz,yt);
20            }
21        }
22    }


2.在GUI中进行超链接设置到文件。界面如图
  

















用到的代码如下:

 

 1 import java.awt.BorderLayout;
 2 import java.io.File;
 3 import java.io.IOException;
 4 import javax.swing.JEditorPane;
 5 import javax.swing.JFileChooser;
 6 import javax.swing.JFrame;
 7 import javax.swing.JScrollPane;
 8 import javax.swing.SwingUtilities;
 9 import javax.swing.event.HyperlinkEvent;
10 import javax.swing.event.HyperlinkListener;
11 
12 public class EditorPaneSample {
13         public static void main(String args[]) throws IOException {
14                 JFrame f = new JFrame("JEditorPane Sample");
15                 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
16 
17                 JEditorPane editor = new JEditorPane("text/html","<center><a href=\"\">浏览文件<center>");
18                 editor.setEditable(false);
19 
20                 HyperlinkListener hyperlinkListener = new ActivatedHyperlinkListener(f,
21                                 editor);
22                 editor.addHyperlinkListener(hyperlinkListener);
23 
24                 JScrollPane scrollPane = new JScrollPane(editor);
25                 f.getContentPane().add(scrollPane, BorderLayout.CENTER);
26                 f.setSize(300, 200);
27                 f.setVisible(true);
28         }
29 }
30 
31 class ActivatedHyperlinkListener implements HyperlinkListener {
32 
33         JFrame frame;
34         JEditorPane editorPane;
35 
36         public ActivatedHyperlinkListener(JFrame frame, JEditorPane editorPane) {
37                 this.frame = frame;
38                 this.editorPane = editorPane;
39         }
40 
41         public void hyperlinkUpdate(HyperlinkEvent hyperlinkEvent) {
42                 HyperlinkEvent.EventType type = hyperlinkEvent.getEventType();
43 
44                 if (type == HyperlinkEvent.EventType.ACTIVATED) {
45                         Runnable runner = new Runnable() {
46                                 public void run() {
47                                         JFileChooser chooser = new JFileChooser(".");
48                                         chooser.setAcceptAllFileFilterUsed(false);
49 
50                                         int status = chooser.showOpenDialog(editorPane);
51                                         if (status == JFileChooser.APPROVE_OPTION) {
52                                                 File f = chooser.getSelectedFile();
53                                                 System.out.println(f);
54                                         }
55                                 }
56                         };
57                         SwingUtilities.invokeLater(runner);
58                 }
59         }
60 }



  

3.双击一个按钮后能够打开一个制定的txt文件。
    技术代码如下：
   
1if(evt.getClickCount()  ==  2){
2            try{
3                String getpath = "notepad.exe"+" "+jTextField1.getText();
4                Runtime.getRuntime().exec(getpath);
5            }catch(Exception   e){
6                System.out.println(e.getMessage());
7            }
8        }
4.你如果有什么好的方法请不要忘记留言呀!你也可以发到bbtrue2008@163.com

posted @ 2009-06-04 16:16 javats 阅读(138) | 评论 (0) | 编辑 收藏