Why can't I use Stream#toList to collect a list of a class' interface in Java 16?
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I'm streaming objects of a class implementing an interface. I'd like to collect them as a list of elements of the interface, rather than the implementing class. This seems impossible with Java 16.0.1's Stream#toList method. For example in the code below, the last statement will fail to compile. import java.util.List; import java.util.stream.Collectors; import java.util.stream.Stream; public class WhyDodo { private interface Dodo { } private static class FancyDodo implements Dodo { } public static void main(String[] args) { final List<Dodo> dodos = Stream.of(new FancyDodo()).collect(Collectors.toList()); final List<FancyDodo> fancyDodos = Stream.of(new FancyDodo()).toList(); final List<Dodo> n...