public static String buildStreamsString(Collection<String> set){
  String result="";
  String sep="";
  for (  String channel : set) {
    result+=sep + channel.replace("#","");
    sep=", ";
  }
  return result;
}

public static String buildStreamsString ( Collection < String > set ) { String result = "" ; String sep = "" ; for ( String channel : set ) { result += sep + channel . replace ( "#" , "" ) ; sep = ", " ; } return result ; }
takes a set of strings and builds a single comma - seperated string of streams out of it .
