Mysql----Java JDBC

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
public class  Demo{
    public static void main(String[] args) throws Exception{
    //1.加载驱动
        Class.forName("com.mysql.jdbc.Driver");
//2.配置连接信息
        String url="jdbc:mysql://localhost:3306/shop?useUnicode=true&useSSL=true&character=utf8";
        String user="root";
        String password="12345";
//3.建立连接
   Connection con= DriverManager.getConnection(url,user,password);
//4.创建读取对象
　　　　//PreparedStatement  ps= con.prepareStatement(sql)//预加载; ps.executeQuery()执行;

      //PreparedStatement  ps= con.prepareStatement(“update user set password=? where username=? ”)  ps.setObject(1,"1234");ps.setObject(2,"chen");//预加载; ps.executeQuery()执行;

Statement st= con.createStatement(); 
//5.创建查询语句
 String sql="select * from user";
 //6.执行语句操作 
ResultSet result= st.executeQuery(sql); 
//7.获取数据并打印 
while(result.next())
{ System.out.print(result.getObject(1)+result.getObject(2)+....); 
//8.关闭连接 
con.close(); } }