package tool;import java.io.File;import java.util.ArrayList;import java.util.List;public class Test {	private static  List
    
      list =new ArrayList
     
      ();	 public static void main(String[] args) throws Exception {	  //递归显示C盘下所有文件夹及其中文件	  File root = new File("E:/images");	  showAllFiles(root);	  if(list.size()==1100){		  int n=1;		  for(String path:list){			  renameFile(path,String.valueOf(n));			  n++;			  System.out.println("hi: "+n);		  }	  }	 }	 	 final static void renameFile(String path,String newname){		 File file=new File(path);  		 if(file.exists())		 {		 file.renameTo(new File("d:/new/"+newname+".png"));		 }	 }	 final static void showAllFiles(File dir) throws Exception{	  File[] fs = dir.listFiles();	  for(int i=0; i