public void close() {
		try {
			if (resultSet != null) {
				resultSet.close();
			}
			
			if (statement != null) {
				statement.close();
			}
			
			if (connection != null) {
				connection.close();
			}
		}
		catch(Exception e){
			e.printStackTrace();	
			System.out.println(e);
		}
	}