java删除指定目录下指定格式文件的方法

import java.io.File; public class Main {  static int count = 0;  public static void main(String[] args) {    //路径    String path="/media/lcy/Data/Workspaces/java/crazyJava";    String geshi=".class";    refreshFileList(path,geshi);    System.out.println("共删除了：" + count + "个文件！");  }   public static void refreshFileList(String strPath,String geshi) {    File dir = new File(strPath);    File[] files = dir.listFiles();    if (files == null)    {      System.out.println("该目录下没有任何一个文件！");      return;    }    for (int i = 0; i < files.length; i++) {      if (files[i].isDirectory()) {        refreshFileList(files[i].getAbsolutePath(),geshi);      }else {        String strFileName = files[i].getAbsolutePath().toLowerCase();        if(strFileName.endsWith(geshi)){          System.out.println("正在删除：" + strFileName);          files[i].delete();          count++;        }      }    }  }}