无法插入和检索mysql服务器数据库信息

我已经在我朋友的电脑上创建了一个名为test（表名演示）的数据库。我可以使用我朋友的电脑的IP地址从我的浏览器中看到这个表。但我想使用我的电脑上的java代码将数据插入和检索到这个数据库（测试）。我试试，但netbeans显示错误信息。

i have created a database named test(table name demo) on wamp on my friend's pc.i am able to see this table from my browser using ip address of my friend's pc. but i want to insert and retrive data into this database(test) using java code from my pc. i try that but netbeans shows an error message.

here is my code :


package ashdemo;

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

public class Ashdemo {

        public static void main(String args[]) throws InstantiationException, IllegalAccessException
    {
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
                 Connection con = DriverManager.getConnection("jdbc:mysql://friend's_ipaddress:3306/test","username","password



"); 
                    Statement stmt=con.createStatement();
                  stmt.executeUpdate("Insert into demo values(1,'abc','nagpur')");
                    //ResultSet rs= stmt.executeQuery("Select name from demo where id=1");
                    //rs.next();
                   //String name= rs.getString("name");               
                    //System.out.println(name);
                    System.out.println("DOne..");
                   //INSERT INTO `student`(`id`, `name`, `address`) VALUES (1,'amol','nagpur');
                con.close();

              }
    catch(ClassNotFoundException | SQLException e){
        System.out.println("error"+e);
    }

    }

    }
error message is : 

errorjava.sql.SQLException：访问被拒绝用户
'用户名'@'myipaddress'（使用密码：是）

errorjava.sql.SQLException: Access denied for user 'username'@'myipaddress' (using password: YES)