javafx - Exception when using CheckListView of Controls FX -

i have error :

exception in thread "javafx application thread" java.lang.indexoutofboundsexception: index: 0 

i thought because have use platform.runlater(), seems errors not come this.

here's function try correct platform.runlater() :

public void setlistairportforfilter(listairport listairport){     this.mylistairport = listairport;      departurechecklistview.setitems(mylistairport.getobservabledepartureairtport());     arrivalchecklistview.setitems(mylistairport.getobservablearrivalairport());      departurechecklistview.getcheckmodel().getcheckeditems().addlistener(new listchangelistener<string>() {         @override         public void onchanged(listchangelistener.change<? extends string> c) {             c.next();             if(c.wasadded()) {                   observableforbiddendeparture.add(c.getaddedsublist().get(0));                 system.out.println("item checked : " + c.getaddedsublist().get(0));             }              else if (c.wasremoved()) {                 observableforbiddendeparture.remove(c.getaddedsublist().get(0));                 system.out.println("item unchecked : " + c.getremoved().get(0));             }         }      });  } 

the error triggered in second case, removed.

if element removed , calls listchangelistener, change have list of items removed , not list of items added.

in second case, checking c.wasremoved(), means if true, elements removed observablelist. removed values stored inside getremoved() sub-list , if try fetch getaddedsublist(), empty list.

you need use

observableforbiddendeparture.remove(c.getremoved().get(0)); 

instead of

observableforbiddendeparture.remove(c.getaddedsublist().get(0));