Java删除文件夹

/**
  * 删除文件夹
  */
 public static boolean deleteDir(File dir) {
     if (dir.isDirectory()) {
         File[] subFiles = dir.listFiles();
         for (File subFile : subFiles) {
             boolean success = deleteDir(subFile);
             if (!success) {
                 return false;
             }
         }
     }
     return dir.delete();
 }