Share model object in java mvc -

i'm making application mvc architecture. question is: how can share istance of model between many classes in controller?

it difficult 'cause i'm using listener,i call listener controller passing model:

class buttonlistener1 implements actionlistener {      @override     public void actionperformed(actionevent e) {          system.out.println(e.getactioncommand());           if(e.getactioncommand().equals("inizia")){              //call controller passing model         }       }   } 

when construct button, can set model.