JDBC使用步骤

 1 package com.gui;
 2 
 3 import java.sql.Connection;
 4 import java.sql.DriverManager;
 5 import java.sql.ResultSet;
 6 import java.sql.Statement;
 7 
 8 public class DBUtil {
 9 
10     private static final String URL = "jdbc:mysql://127.0.0.1:3306/imooc";
11     private static final String USER = "root";
12     private static final String PASSERWORD = "123";
13 
14     public static void main(String[] args) throws Exception {
15 
16         // 1.加载驱动程序
17         Class.forName("com.mysql.jdbc.Driver");
18 
19         // 2.获取数据库的连接
20         Connection conn = DriverManager.getConnection(URL, USER, PASSERWORD);
21 
22         // 3.通过数据库的连接操作数据库，实现增删改
23         Statement stmt = conn.createStatement();
24         ResultSet rs = stmt
25                 .executeQuery("select user_name,age from imooc_goddess");
26 
27         while (rs.next()) {
28             System.out.println(rs.getString("user_name") + ","
29                     + rs.getString("age"));
30 
31         }
32 
33     }
34 }