mano eilutė:
public SortedSetADT<E> subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive)

tavo eilutė:
public SortedSetADT<E> subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive)

mano eilutėje klaida: "Add @param tag", paspaudus rodo <error>