static void close(ResultSet rs,Statement state,Connection conn){
		if(rs != null){
			try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			rs = null;
		}
		if(state != null){
			try {
				state.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			state = null;
		}
		if(conn != null){
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			conn = null;
		}
	}