I like Java but being able to tell at compile time that don't allow null on something no matter what, gives you a lot of advantage (and some disadvantage if you

I like Java but being able to tell at compile time that don't allow null on something no matter what, gives you a lot of advantage (and some disadvantage if you design wrong). Exceptions are not necessary in this case as null safety can not be isolated (unless you choose it). It is either everywhere or nowhere or you force an arbitrary line by telling something not-nullable when it can be (not a good idea). A good example is the state Dart is in right now. Almost everything has been transformed to null-safety including most of the community packages and it works really nicely.