public static void delete(String filename) {
		try {

			File file = new File(filename);
			if (file.exists()) {
				if (file.delete()) {
					System.out.println(filename + " is deleted!");
				} else {
					System.out.println("Delete operation is failed. "
							+ filename + " cannot be deleted");
				}
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}