jdbc链接数据库8.0.18最新版jar包

```java

```java
java
package cn.jdbc;

import java.sql.*;

/*
* jdbc
* 快速入门
* 8.0.18版本jar
* *phpstudy安装mysql5.7.26

* navicat管理数据库
*
*
* */
public class jdbcDemo
{
    public static void main(String[] args) throws SQLException, ClassNotFoundException {

//1导入驱动jar包add
        //注册驱动
        Class.forName("com.mysql.cj.jdbc.Driver");
        //获取数据库链接对象
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/demo?serverTimezone=GMT%2B8&useSSL=false", "lmlm", "123456");
        //获取执行方法的对象Statement
        Statement statement = connection.createStatement();
        // 定义sql语句
       String sql="SELECT blance FROM dbs WHERE id=1";
        //执行sql语句x`
        ResultSet i = statement.executeQuery(sql);
        //处理结果

          while(i.next()!=false) {

            int id=i.getInt(1);
            System.out.println(id);
}


        //释放资源
        statement.close();
        connection.close();




    }


}