java - Filter twitter4j stream -

i'm trying filter twitter4j stream following code :

    twitterstream twitterstream = gettwitterstreaminstance();      // listener     twitterstream.addlistener(listener);      // filter     filterquery filtre = new filterquery();     string[] keywordsarray = { "iphone", "samsung" };     filtre.track(keywordsarray);     twitterstream.filter(filtre);      // listening     twitterstream.sample(); 

but result is, example :

27/59 - "taking risk on means want more anything" 28/63 - more attractive are, more awkward am. 29/64 - thing pain demands felt 

and don't recover keywords want follow, problem ?

you don't need:

twitterstream.sample(); 

if remove it, should start seeing tweets matching filter query.

when invoke filter listener receive filtered tweets, because invoke sample replacing filtered-stream listener receiving sample steam, random selection tweets.

so in other words call either sample or filter, not both.