文件个数统计

 
import java.io.File;
import java.io.FilenameFilter;
import java.io.*;
 
public class FileCount {
 private static int count = 0;
 public static void main(String[] args){
  File f = new File("e:\\");
  //System.out.println(f.getName());
  int c = getFileNum(f);
  System.out.println(c);
 }
 
 public static int getFileNum(File f){
  
  if(f != null){
   if(f.isDirectory()){
    //System.out.println("filename==" + f.getName());
    File[] subFiles = f.listFiles(new FilenameFilter(){
     @Override
     public boolean accept(File dir, String name) {
      if(dir.isDirectory())return true;
      if(name.lastIndexOf("rar") != -1)return true;
      return false;
     }
    } );
    //System.out.println(subFiles.length);
    for(int i = 0 ; i < subFiles.length ; i++){
     //System.out.println("subFile==" + subFiles[i]);
     if(subFiles[i].isFile()){
      if(subFiles[i].getName().lastIndexOf("rar") != -1) count++;
     }
     else if(subFiles[i].isDirectory())getFileNum(subFiles[i]);
    }
   }else{
    return 1;
   }
  }
  return count;
 }
 
}