java - implements ListModel, need to update JList on Change -

i have custom collection implements listmodel. when collection changes, need notify jlist. typically you'd firelistdatachanged, not method implemented listmodel.

how should go modifying code automatically update jlist?

jlist here:

this.selectedinterfacesjlist.setmodel(new tufininterfacecollection()); 

collection here:

public class tufininterfacecollection extends abstractcollection<tufininterface> implements listmodel<string> {     arraylist<tufininterface> list=new arraylist();     private final arraylist listeners=new arraylist();      @override     public boolean remove(object o) {         return list.remove(o); //to change body of generated methods, choose tools | templates.     }      @override     public boolean add(tufininterface e) {         return list.add(e); //to change body of generated methods, choose tools | templates.     }      public tufininterface get(int i){         return list.get(i);     }      @override     public iterator<tufininterface> iterator() {         return list.iterator();     }      @override     public int size() {        return list.size();     }      @override     public int getsize() {         return size();     }      @override     public string getelementat(int i) {         return get(i).tostring();     }          @override     public void addlistdatalistener(listdatalistener ll) {         this.listeners.add(ll);     }      @override     public void removelistdatalistener(listdatalistener ll) {         this.listeners.remove(ll);     }     }