数据库连接问题，密码和用户名不正确但是连接了mysql数据库，为什么？

Question

你好 请问是什么原因？ 用户名和密码不正确但已连接MySql数据库 这是我的代码

package employee.crud.db;
    
    import java.sql.Connection;
    import java.sql.DriverManager;
    
    public class DBConnection {
        public static final String dbUrl = "jdbc:mysql://localhost:3306/employee_db";
        public static final String dbUserName = "";
        public static final String dbPassword= "m";
        
    public static Connection getConnection() {
        System.out.println("Start connection.. " );//Logger : Log4j 
        try {
            //Load MySql JDBC Driver 
            Class.forName("com.mysql.jdbc.Driver");
            //Open Connection
            connection = DriverManager.getConnection(dbUrl,dbUserName,dbPassword);
            if(connection != null) {
                System.out.println("Connected !");
                return connection;
            }
            else {
                System.out.println("Connection issue !");
                return null;
            }
        }catch(Exception e) {
            System.out.println("Exception DB Connection==>> " + e.getMessage());
            e.printStackTrace();
            return null;
        }
    }
    public static Connection connection = getConnection();
    public static void main(String[] args) {
        System.out.println(DBConnection.connection);
    }
    }

我的身份验证问题是什么，密码和用户名不正确但已连接