I can live with the notion of nulls. But I think having all (non-primitive) function parameters be nullable is a huge mistake. It is just very rarely what the w

I can live with the notion of nulls. But I think having all (non-primitive) function parameters be nullable is a huge mistake. It is just very rarely what the writer actually wants. And explicitly checking for null for all object parameters is a huge pain. The right solution, to my mind, would be to have function parameters be non-nullable by default. Unfortunately it is too late in the history of Java to switch to that behavior now. Too much code would break. So I would settle for being able to declare individual function parameters non-nullable as a standard part of the language. I can't believe it would be all that hard to implement.