关于修改视频文件名

import java.io.File;
import java.nio.file.FileStore;

public class Main {

    public static void main(String[] args) {
        File file=new File("E:\\xxxx\\xxxxxxxx");
        File[] files=file.listFiles();
        System.out.println(files.length);
        for(int i=0;i<files.length;i++){
            if(files[i].getName().contains("yyyy")){
               String originName =files[i].getName();
               //System.out.println(files[i].getName());
               int index=originName.lastIndexOf(" ");
               String rename=originName.substring(index);
               String rename2=rename.substring(1);
               File f=new File("E:\\xxxx\\xxxxxxxx\\"+rename2); files[i].renameTo(f); System.out.println(rename); } } }
 }