1 package sb_eclipse; 2 import java.io.File; 3 import java.io.IOException; 4 import java.util.ArrayList; 5  6 public class ScanSuffix { 7     private static int ScanSuffixCount = 0; 8     private static ArrayList
     
       ScanSuffixFiles = new ArrayList
      
       (); 9     10     11     public static void ScanSuffix(String path, String suffix) {12         File file,tempFile;13         file = new File(path);14         if (! file.isDirectory()) {15             return ;16         }17         if (suffix.isEmpty()) {18             return ;19         }20         21         String[] fileList = file.list();22         for(String fileName : fileList) {23             tempFile = new File(path + "\\" + fileName);24             if (tempFile.isDirectory()) {25                 ScanSuffix(path + "\\" + fileName, suffix);26             }27             if (tempFile.isFile()) {28                 String[] splitFileName = fileName.split("\\.");29                 String ext = splitFileName[splitFileName.length - 1];30                 if (ext.equals(suffix)) {31                     ScanSuffixCount += 1;32                     ScanSuffixFiles.add(path + "\\" + fileName);33                 }34             }35         }36     }37     38     public static void main(String[] args) {39         // TODO Auto-generated method stub40         String path = "F:\\谷歌下载";41         String suffix = "php";42         System.out.println("开始查找...");43         long beginTime = System.currentTimeMillis()/1000;44         ScanSuffix(path, suffix);45         long endTime = System.currentTimeMillis()/1000;46         long time = endTime - beginTime;47         for (String fileName : ScanSuffixFiles) {48             System.out.println(fileName);49         }50         System.out.println("查找结束,耗时" + Long.toString(time) + "秒");51         System.out.println("在" + path + "目录下搜索后缀为" + suffix + "的数目有" + ScanSuffixCount + "个");52         53     }54 55 }
      
     

代码很简单。核心就是一个递归处理