ImmutableSortedSet Sınıfı

Giriş
Şu satırı dahil ederiz

import com.google.common.collect.ImmutableSortedSet;

copyOf metodu
Şöyle yaparız.

Set<String> set = new HashSet<String>();
Comparator<String> myComparator = new Comparator<String>(){
  @Override
  public int compare(String o1, String o2) {
    return 0;
  }           
};
ImmutableSortedSet<String> ordered = ImmutableSortedSet.copyOf(myComparator,set);

toImmutableSortedSet metodu
Şöyle yaparız.

import static com.google.common.collect.ImmutableSortedSet.toImmutableSortedSet;
import static java.util.Comparator.naturalOrder;

set.stream()
  .map(quest -> ...)
  .collect(toImmutableSortedSet(naturalOrder()));