jdbc入门 连接mysql执行简单语句

package cn.itcast.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/**
 * @Author: Zhang
 * @Description:JDBC快速入门
 * @Date: Created in 15:18 2020/12/27
 * @Modified By:
 */
public class JdbcDemo1 {
    
    
    public static void main(String[] args) throws Exception {
    
    
        //1.导入jar包
        //2.注册驱动
        Class.forName("com.mysql.jdbc.Driver");
        //3.获取数据库的连接对象
        Connection conn = DriverManager.getConnection("jdbc:mysql://doitedu01:3306/test","root","ABC123abc.123");
        //4.定义sql语句
        String sql = "update student set  gender = 'w' where id = '201901' ";
        //5.获取执行sql的对象Statement
        Statement statement = conn.createStatement();
        //6.执行sql
        int count = statement.executeUpdate(sql);
        //7.处理结果
        System.out.println(count);
        //8.释放资源
        statement.close();
        conn.close();



    }
}