批量修改文件名稱

package com.pp; import java.io.File; import java.io.IOException; public class FileRename {     public static void main(String[] args) throws IOException {         File file = new File("E:/excel");         if (file == null) {             return;         }         if (file.isDirectory()) {             String newName="";             String[] files = file.list();             for (int i = 0; i < files.length; i++) {                 File f = new File(file,files[i]);                    String name = f.getCanonicalPath();                newName=name.replaceAll("-", "");                               f.renameTo(new File(newName));                   System.out.println(newName);                             }         }     } }