java 级联删除文件夹下的所有文件

public void deletefile(String delpath) throws Exception {try {File file = new File(delpath);// 当且仅当此抽象路径名表示的文件存在且 是一个目录时，返回 trueif (!file.isDirectory()) {file.delete();} else if (file.isDirectory()) {String[] filelist = file.list();for (int i = 0; i < filelist.length; i++) {File delfile = new File(delpath + "/" + filelist[i]);if (!delfile.isDirectory()) {delfile.delete();System.out.println(delfile.getAbsolutePath() + "删除文件成功");} else if (delfile.isDirectory()) {deletefile(delpath + "/" + filelist[i]);}}System.out.println(file.getAbsolutePath() + "删除成功");file.delete();}} catch (FileNotFoundException e) {System.out.println("deletefile() Exception:" + e.getMessage());}}