代码：

package com.yikuan.jdbc.dml;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement;public class InsertClass {    public static void main(String[] args) {        Connection conn = null;        Statement cs = null;        try {            //1.加载注册驱动            Class.forName("com.mysql.jdbc.Driver");            //2.连接数据库            String url = "jdbc:mysql://localhost:3306/jdbc_db";    /*远程的写IP地址*/            String user = "root";            String password = "789789";            conn = DriverManager.getConnection(url, user, password);            //3.创建sql语句            String sql = "insert into stu values (1,'zhangsan',20)";            cs = conn.createStatement();            //4.执行sql            int row = cs.executeUpdate(sql);            System.out.println(row);        } catch (Exception e) {            e.printStackTrace();        } finally {            //5.释放资源            if(cs != null){                try {                    cs.close();                } catch (SQLException e) {                    e.printStackTrace();                }                            }            if(conn != null){                try {                    conn.close();                } catch (SQLException e) {                    e.printStackTrace();                }            }                    }    }}

实验结果：