删除某类型文件

/*
 *删除windows下某类型的所有文件，递归子目录。如果linux可能需要修改
 */

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.File;

class DelJava {
 public static boolean deletefile(String delpath)
   throws FileNotFoundException, IOException {
  int filedel = 0, filenum = 0，foldnum=0;
  try {
   File file = new File(delpath);
   if (!file.isDirectory()) {
    filenum++;
    if (delpath.contains(".java")) {
     filedel++;
     file.delete();
    }
   } else if (file.isDirectory()) {
    foldnum++;
    String[] filelist = file.list();
    filenum = +filelist.length;
    for (int i = 0; i < filelist.length; i++) {
     File delfile = null;
     delfile = new File(delpath + "//" + filelist[i]);
     if (!delfile.isDirectory()) {
      if (filelist[i].contains(".java")) {
       delfile.delete();
       filedel++;
      }
     } else if (delfile.isDirectory()) {
      foldnum++;
      deletefile(delpath + "//" + filelist[i]);
     }
    }
    file.delete();
   }
  } catch (FileNotFoundException e) {
   System.out.println(e.getMessage());
  }
  System.out.println("共有文件个数" + filenum + "；/t删除java文件个数" + filedel);
  return true;
 }

 public static void main(String[] args) {
  String path = System.getProperty("user.dir");//当前绝对路径
  System.out.println(path);
  try {
   if (DelJava.deletefile(path))
    System.out.println("删除成功");
  } catch (IOException e) {
   System.out.println(e.toString());
  }
 }
}