文件重命名 java代码

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import java.io.File;


public class ReName {


//以前文件名的开头
public final static String startWith = "398_";
//需要改成什么开头
public final static String startWithNew = "397_";

public static void main(String[] args) {   
// 图标资源的绝对路径  
String path = "D:\\JavaProject\\ReName\\cocosstudio";   


renameFile(path);   
}   

/*
* 将文件名从 startWith开头换成成 startWithNew开头
* 如果原文件名不是以startWith,则依然替换成startWithNew开头
*/
private static  void renameFile(String path){   
// get file list where the path has   
File file = new File(path);   
// get the folder list   
File[] array = file.listFiles();   


for(int i=0;i<array.length;i++){   
if(array[i].isFile()){   
String fileName = array[i].getName();
if(fileName.startsWith(startWith)) {
String[] split = fileName.split("_");
fileName = startWithNew;
System.out.println("长度名:"+split.length);
for(int j = 1;j<split.length;) {
fileName = fileName + split[j];
if(++j<split.length) {
fileName = fileName + "_";
}
}
File newFile = new File(path+"\\"+fileName);
System.out.println("文件名:"+fileName);   
array[i].renameTo(newFile);
}else {
File newFile = new File(path+"\\"+startWithNew+fileName);
array[i].renameTo(newFile);
}


}else if(array[i].isDirectory()){   
renameFile(array[i].getPath());   
}   
}   
}   


}