Buttons action from multiple package in Java and Netbeans

Question

I am making the login and register part of an app in Netbeans in Java and SQL. It is my first time using Netbeans and making a GUI with listeners etc.

I have a package app.controller a package app.view.

In my app.controller there is a class MainController.java, a class user.java and a class QueryRunner.java with a static function :

public static ResultSet runQuery(String query)

that runs a query by connecting to the data base with jdbc.

So in my user.java I can run a function :

public boolean login(String email, String password);

than return true if the user is present in the database and false if not. login uses runQuery in its body.

In theory in my MainController.java I want to instanciate a user and a QueryRunner and, a ButtonListener

In the app.view package, I have netbeans' automated JFrame with a form and a login button. When a person fill the form and press on login I need it to transfers to the MainController.java so it can handle everything.

To make this possible, my idea is that in the MainController.java I add a class MainView for example that comes from app.view. The problem is how to implement the listener ? And what to put in the Netbeans JFrame automatically generated code like this one for example:

 private void loginButtonActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
    }   

Knowing that I will have many buttons later, like one to get reservation, another to delete reservation, and I want to handle them the same way :

button-click --> Listener Activate --> MainController.java getData from the View -->
class instanciated in MainController create and run SQL --> transfer to MainController.java --> update the View ...

While we are at it, am I correctly implementing MVC pattern ? My model being the dataBase ... I feel like I am doing something wrong because it simple but complicated at the same time... If you need more info don't hesitate to tell me.