ResultSet.next two time will find the result is blank : Why i can't while for two time.the second time I will get blank.


            [enter image description here][1]String sql = "select * from t_user";
			Connection con = dbUtil.getCon();
			Statement statement = con.createStatement();
			ResultSet rs = statement.executeQuery(sql);

			while (rs.next()) {
				System.out.println("phoneFirst" + rs.getString("phone"));
			}

			while (rs.next()) {
				System.out.println("phoneSecond" + rs.getString("phone"));
			}


  [1]: https://i.stack.imgur.com/ulcVn.png