> Note that the upgrade pain with Java was not due to typing; rather, it was due to using a library directly instead of creating a class to interface with it. In other words, inadequate abstraction.

I'd look into what Jersey actually is before you say something like this, because what you've said really doesn't make sense.

How so?

Yikes, is this really the expected way to do things in Java? That sounds frustratingly verbose. But I guess that is expected with Java.

I find that making those classes is a pain in java, but really easy in typescript