JDBC执行DML操作--代码+实验结果

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：