Question

Acctaully i am implementing Model-View-Controller(MVC) and in controller class i have to know which view’s JButton have fired event.

Answer 1

Use the getSource() method of the event:

Object source = event.getSource();
if (source == button1) {
    ...
}
else if (source == button2) {
    ...
}

But you should probably avoid having a single ActionListener handle the events from multiple buttons in the first place. Each button should have its own responsibility, and hence be handled by a single listener.