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 true

            if (!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());

        }

    }