如何验证mysql netbeans中的用户名和口令

import java.sql.*;

public class Main {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/database_name";
        String username = "your_username";
        String password = "your_password";

        try {
            Connection connection = DriverManager.getConnection(url, username, password);
            System.out.println("Connection successful!");
            connection.close();
        } catch (SQLException e) {
            System.out.println("Connection failed!");
            e.printStackTrace();
        }
    }
}