import java.time.*;

ZonedDateTime target = ZonedDateTime.of(
    2025, 12, 31, 23, 59, 0, 0, ZoneId.systemDefault() // год, мес, день, часы, минуты
);

Duration d = Duration.between(ZonedDateTime.now(), target);
if (d.isNegative()) { System.out.println("Событие уже прошло"); return; }

long days = d.toDays();
long hours = d.minusDays(days).toHours();
long mins = d.minusDays(days).minusHours(hours).toMinutes();
System.out.println("Осталось: " + days + " д " + hours + " ч " + mins + " м");

List<String> items = List.of("A", "B", "C", "D", "E");
List<String> part = items.subList(1, 4);

System.out.println(part); // [B, C, D]

List<String> list = new ArrayList<>(List.of("one", "two", "three"));
List<String> sub = list.subList(0, 2);
sub.set(0, "ONE");

System.out.println(list); // [ONE, two, three]