import java.util.List; | |
abstract class CollectionsExamples<T> { | |
private List<T> getEvenL() { | |
return collect( toList()); | |
} | |
static <TT> Collector<?, List<TT>> toList() { | |
return null; | |
} | |
abstract <R, A> R collect(Collector<A, R> collector); | |
interface Collector<A, R> {} | |
} |