public void closed() {
		try {
			if (pstm != null)
				pstm.close();
		} catch (SQLException e) {
			System.out.println("رpstmʧܣ");
			e.printStackTrace();
		}
		try {
			if (con != null) {
				con.close();
			}
		} catch (SQLException e) {
			System.out.println("رconʧܣ");
			e.printStackTrace();
		}
	}