public List<TravelDemand> getDemands(Predicate<TravelDemand> predicate) {
return demands.stream().filter(predicate).collect(Collectors.toList());
}
public void mark(int id) {
Optional<TravelDemand> optional = demands.stream().filter(d -> id == d.getIndex()).findFirst();
if (optional.isPresent()) {
optional.get().setServe(true);
}
}
public Collection<TravelDemand> getDemands() {
return demands.stream().filter(d -> !d.serve()).collect(Collectors.toList());
}