java - JavaFX Property for a BitSet -

i need javafx property bitset in order create tablecolumn toggle button each bit in bitset. have implemented property<bitset> oracle documentation meaning , usage of of interface methods still eludes me, me looks superfluous boilerplate. please tell me if on right track implementation , can improve. didn't implement bindings yet because don't expect need them use case.

import java.util.*; import javafx.beans.invalidationlistener; import javafx.beans.property.property; import javafx.beans.value.changelistener; import javafx.beans.value.observablevalue;  public class bitsetproperty implements property<bitset> {     private bitset  value;     private final set<changelistener<? super bitset>> changelisteners = new hashset<>();     private final set<invalidationlistener> invalidationlisteners = new hashset<>();      @override public object getbean() {return value;}      @override public string getname() {return "what shall return here?";}      @override public void addlistener(changelistener<? super bitset> listener) {changelisteners.add(listener);}      @override public void removelistener(changelistener<? super bitset> listener) {changelisteners.remove(listener);}      @override public bitset getvalue()     {         return (bitset)value.clone();     }      @override public void addlistener(invalidationlistener listener) {invalidationlisteners.add(listener);}     @override public void removelistener(invalidationlistener listener) {invalidationlisteners.remove(listener);}      @override public void setvalue(bitset value)     {         if(!value.equals(this.value))         {             changelisteners.stream().foreach(cl->cl.changed(this, this.value, (bitset)value.clone()));             invalidationlisteners.stream().foreach(il->il.invalidated(this));         }         this.value=value;     }      @override public void bind(observablevalue<? extends bitset> observable)     {         throw new unsupportedoperationexception();     }      @override public void unbind()     {         throw new unsupportedoperationexception();     }      @override public boolean isbound()     {         // todo auto-generated method stub         return false;     }      @override public void bindbidirectional(property<bitset> other)     {         throw new unsupportedoperationexception();     }      @override public void unbindbidirectional(property<bitset> other)     {         throw new unsupportedoperationexception();     } } 

answering own question turns out misunderstood how properties work. thought trigger change events when internal state changes know treat content black box (i guess assuming content immutable) , trigger when content replaced, easier problem. question can solved using:

objectproperty<bitset> property = new simpleobjectproperty<>();