java实现批量重命名文件

mport java.io.*; 
public class SearchFile { 
public static void main(String[] args) { 
    String srcDir="e:\\070104"; 
    File fileDir=new File(srcDir); 
    String desDir="e:\\test"; 
    File[] fileArr=fileDir.listFiles(); 
    File tmp; 
    int i=0; 
    for(int j=0;j<fileArr.length;j++) 
    { i++; 
     tmp=fileArr[j]; 
     tmp.renameTo(new File(desDir+"")); 
      
    } 
     
    System.out.println("source folder "+srcDir); 
    System.out.println("destination folder "+desDir); 
    System.out.println("rename complete!"); 
} 
}