Java (like many other languages of that generation) suffers from a lack of idiomatic 1:1 visibility. Whenever you split something up in Java it litters a namespace that is much bigger than necessary. Even private is too big when the class is full of tiny methods most of which most will never be meaningful to any of their peers except for that one call site. Sure, you can create inner function objects and with 8+ it's not even completely weird anymore, but that's still a far cry from the nested functions goodness of Pascal style "structured programming".