文件改名

import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;


public class RollDateFile {
	
	public static void rename(File f,String old_v,String new_v ){
		if(f.isDirectory()){
			for(File file :f.listFiles()){
				rename(file,old_v,new_v );

			}
		}else{
			String path = f.getParent();
			String newFile = (f.getName()+"").replaceAll(old_v,new_v);
			String newF = path+File.separator+newFile;
			System.out.println(newF);
			f.renameTo(new File(newF));
		}
	}

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		String path ="E:\\a\\";
		String old_value ="20120828";
		String new_value ="20130124";
	File folder = new File(path);
	rename(folder,old_value,new_value);
	}

}