3、过滤文件夹

 1 package Io;
 2 
 3 import java.io.File;
 4 import java.io.FileFilter;
 5 
 6 public class TestFile04 {
 7     public static void main(String[] args) {
 8         new TestFile04().run();
 9     }
10 
11     public void run() {
12         File f = new File("G:\\BaiduYunDownload");
13         File[] files = f.listFiles(new DirFilter());
14         for (File file : files) {
15             System.out.println(file.getName());
16         }
17     }
18 
19     // 文件夹过滤器
20     class DirFilter implements FileFilter {
21 
22         @Override
23         public boolean accept(File pathname) {
24             if (pathname.isDirectory())
25                 return true;
26             else
27                 return false;
28         }
29     }
30 }