Question

public class EventController extends MouseAdapter implements ActionListener {

    private EventModel model;
    private EventView  view;
    String tableClick;
    Events events;    

    /** Constructor */
   public EventController(EventModel myModel, EventView myView){
       model = myModel;
       view = myView;     
   }

   public void setUpListeners() {
       this.view.addEventButton.addActionListener(this); 
       this.view.addEventMenuItem.addActionListener(this);
       this.view.editEventMenuItem.addActionListener(this);
       this.view.tableEvent.addMouseListener(this);                
   }

   @Override
   public void actionPerformed(ActionEvent e){
       Object button = e.getSource();
       if(button==this.view.addEventButton) {
           setEventDetails();          
       }                
   }

   @Override
   public void mouseClicked(java.awt.event.MouseEvent event) {
      int rowSelected = view.tableEvent.getSelectedRow();
       //blahblahblah
      view.changeDisplay(events);
    }

How do I Override the method keyPressed of the KeyListener class just like I have done with the mouseClicked, and ActionPerformed I really don’t want to override keyTyped and keyReleased, just the keyPressed on its own. The interaction takes place in another class called VIEW

Answer 1

Java does not support multiple inheritance, so you can’t extend multiple classes, you can’t have something like:

class EventController extends MouseAdapter, KeyAdapter

You can implement multiple interfaces however, but it seems that you want to avoid that.

Now, the solution to this kind of problem is always the same, use composition over inheritance. You could easily have two inner-classes: one that extends KeyAdapter and the other MouseAdapter. Then later on, when you need to add listeners, you uses fields of your class instead of this.

Something like this:

import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.MouseAdapter;

public class EventController {
    private EventModel model;
    private EventView  view;
    String tableClick;
    Events events;

    private MouseAdapter mouseListener = new MouseAdapter() {

        @Override
        public void mouseClicked(java.awt.event.MouseEvent event) {
          int rowSelected = view.tableEvent.getSelectedRow();
           //blahblahblah
          view.changeDisplay(events);
        }
    };

    private KeyAdapter keyAdapter = new KeyAdapter() {
        public void keyTyped(java.awt.event.KeyEvent e) {
            // Perform here whatever is needed
            // You also have access to your enclosing instance EventController.this and its methods
        }
    };

    private ActionListener actionListener = new ActionListener() {@Override
               public void actionPerformed(ActionEvent e){
           Object button = e.getSource();
           if(button==this.view.addEventButton) {
               setEventDetails();          
           }

       }



    /** Constructor */
   public EventController(EventModel myModel, EventView myView){
       model = myModel;
       view = myView;     
    }

   public void setUpListeners() {
       this.view.addEventButton.addActionListener(actionListener); 
       this.view.addEventMenuItem.addActionListener(actionListener);
       this.view.editEventMenuItem.addActionListener(actionListener);
       this.view.tableEvent.addMouseListener(mouseListener);
       // Here you can also add the keyadapter to your views
   }


 }