Comment by jameslars

I think Java has plenty of features that end up implicitly banned at least. e.g. you will really never see a `java.util.Vector` in any modern code base. No one `implements Serializable` anymore in practice. `Objects.equals()` and `Objects.hashCode()` get you through 99% of equals/hash code implementations. The list goes on.

I guess the difference is it's rarely "dangerous" or "hard to reason about" using the old features unlike what I see in the C++ list. Java replaces things with better things and momentum shifts behind them kind of naturally because the better things are objectively better.