javase_批量修改文件代码
package cn.itcase08;
import java.io.File;
public class IoPiLiang {
public static void main(String[] args) {
File file = new File("E:\\test");
File[] fileArray = file.listFiles();
for(File files : fileArray){
//System.out.println(files);
//E:\test\fsdf008_asadfsjkf_实弹被.txt
String name = files.getName();
int index = name.indexOf("_");
String numberName = name.substring(index-3, index);
// System.out.println(numberName);
int endIndex = name.lastIndexOf("_");
String newName = name.substring(endIndex);
String aa = numberName.concat(newName);
File ii = new File(file,aa);
files.renameTo(ii);
}
}
}