list.stream()
.collect(
Collectors.collectingAndThen(
Collectors.toCollection(
() -> new TreeSet<>(Comparator.comparing(e -> e.getId))
), ArrayList::new
)
);
list.stream()
.collect(
Collectors.collectingAndThen(
Collectors.toCollection(
() -> new TreeSet<>(Comparator.comparing(e -> e.getId))
), ArrayList::new
)
);