import java.util.Comparator; | |
class NullComparator<T> { | |
private final Comparator<T> real = null; | |
private Comparator<? super T> other; | |
private Comparator<T> another; | |
NullComparator(Comparator<? super T> real) { | |
} | |
public NullComparator<T> thenComparing() { | |
return new NullComparator<>(real == null ? other : another); | |
} | |
Comparator<T> a() { | |
return null; | |
} | |
Comparator<? super T> b() { | |
return null; | |
} | |
public NullComparator<T> thenComparing1() { | |
return new NullComparator<>(real == null ? a() : b()); | |
} | |
} |