[aaronem]

> So this "fat JSON" problem is Java's problem, not JSON's, then?

Pretty much.

I would expect that Java could offer some sort of solution to this problem, ideally with an accessor syntax similar to what you'd find in Javascript or, as you say, C#. On the other hand, I've never delved deeply enough into Java to know whether it's feasible; I suppose it's possible that the language simply isn't flexible enough to make such a solution workable.