java - How to add returned values from a Supplier to a FutureList -

i want run 3 methods posted below using completablefuture asynchronous supplier that, when executor finishes futurelist should contain 3 values returned 3 methods respectively. know how use futurelist, example:

futurelist = completablefuture.supplyasync() 

but in case, want like:

futurelist.add(completablefuture.supplyasync()) 

please let me know how can that.

methods:

this.compstabilitymeasure(this.frameijlist, this.frameiklist, sysconsts.stability_measure_token); this.settrackingrepvalue(this.comptrackingrep(this.frameijlist, this.frameiklist, sysconsts.tracking_repeatability_token)); this.setviewpntrepvalue(this.compviewpntrep(this.frameijlist, this.frameiklist, sysconsts.viewpoint_repeatability_token)); 

compstabilitymeasure method implementation:

private void compstabilitymeasure(arraylist<mat> frameijlist, arraylist<mat>    frameiklist, string token) throws interruptedexception, executionexception {     // todo auto-generated method stub     synchronized (frameijlist) {         synchronized (frameijlist) {             this.setrepvalue(this.comprep(frameijlist, frameiklist, token));             this.setsymrepvalue(this.compsymrep(this.getrepvalue(), frameiklist, frameijlist, token));         }     } } 

you want @ using "thencombineasync", eg:

    completablefuture<string> firstfuture = firstmethod();     completablefuture<string> secondfuture = secondmethod();     completablefuture<string> thirdfuture = thirdmethod();     completablefuture<list<string>> allcompleted = firstfuture             .thencombineasync(secondfuture, (first, second) -> listof(first, second))             .thencombineasync(thirdfuture, (list, third) -> {                 list.add(third);                 return list;             });