package com.example.demo2; import javax.servlet.http.HttpServlet; import java.sql.*; public class MyselectServlet extends HttpServlet { public static void main(String[] args) throws ClassNotFoundException, SQLException { Class.forName("com.mysql.jdbc.Driver"); String url = "jdbc:mysql://localhost:3306/demo1"; Connection connection = DriverManager.getConnection(url,"root","root"); //System.out.println(connection); String sql = "select * from admin where id=1"; Statement statement = connection.createStatement(); ResultSet rs = statement.executeQuery(sql); System.out.println(rs); while (rs.next()) { //System.out.println(rs.getInt("id")); System.out.println(rs.getString("username")); System.out.println(rs.getString("password")); } } }