Files

18 lines
443 B
Java

import java.util.Collection;
import java.util.Set;
class FooObject<T> {}
class FooId<T extends FooObject> {}
interface Bar {
<T extends FooObject, I extends FooId<? extends T>> T get(I key);
<T extends FooObject, I extends FooId<? extends T>> Collection<T> get(Collection<I> keys);
}
class Target {
void foo(Bar bar) {
final Set<FooId<?>> keys = null;
final Collection<FooObject> values = bar.get(keys);
}
}