I have a reference to a class that is null

I'm trying to execute a method in another class but my reference is null.

I have a Main calculator class that begins like so:

public class Calculator {

public static void main( String[] args ) {

    // create new model, view and controller
    Model theModel = new Model();
    View theView = new View();
    Controller theController = new Controller( theModel, theView );

    /* start it up */
    theView.CalcView();

Inside the view class, I have buttons that I create as such registering the controller as the listener:

    btnZero = new JButton( "0" );
    btnZero.addActionListener( new Controller() );
    btnZero.setBounds( 167, 174, 86, 23 );
    frame.getContentPane().add( btnZero );

Also inside the view class I capture keys pressed:

    private void keyPressed( KeyEvent e, Controller controller ) {
    controller.keyPressed( e );
}

My current objective is to execute a method in the view class from the controller class with a keystroke view.toggleBorder( '1', true );:

    public void keyPressed( KeyEvent e ) {
    char key = e.getKeyChar();

    switch ( key ) {
    case '1':
    System.out.println( "1" );
    view.toggleBorder( '1', true );
    break;

The Controller constructor:

    public Controller( Model model, View view ) {
    this.model = model;
    this.view = view;

}

But I also have a no argument constructor that I had to make when registering the controller as the listener as you see in the button code above. The issue is, when it comes to view.toggleBorder.., the reference to view is null so it throws a null pointer exception. I think there is a problem with the harmony of my classes but I cannot find where there might be problems. This code is fragmented I apologize. You can view the source files on GitHub