1. What's a good tutorial to learn JAXB and JAX-RS?
2. Maven is a nightmare too. Every time I've used it (usually because I'm compiling someone else's code and they wrote the build in maven), it downloads hundreds of megabytes of who-knows-what from random Internet sites. I want to pin versions of dependencies (and dependencies-of-dependencies) so my builds are repeatable, and I want to be sure everyone who's forked my git repo can still build the code if the Maven URL's for the deps have gone out of business. I recall trying to read the Maven manual, but both the manual and the concepts were incomprehensible -- there's so much automagic, when things break, it's difficult to even come up with a hypothesis of what might be going wrong. (And anyone who has any experience with any build system knows that the build always breaks.)
I usually just use Ant. It's a bit of a pain shuttling jar's around (symlinks help), but at least I can understand the build.
3. Part of the problem is that I don't want this alphabet soup of technologies. If I'm running in Python, and I'm developing a prototype or a one-off hack, I just write a file called whatever.py. (I can "import json" in whatever.py if I don't want to use hacks like eval()/repr() or copy-and-paste for parsing/serializing.)
I want to be able to build a quick one-file prototype to process my XML, without enabling the "Java EE 6 web profile" (whatever that is) and writing a Maven build file. I want using XML to be this simple:
sudo apt-get install default-jdk
javac Whatever.java && java Whatever
And Java's XML handling just
isn't that simple, whereas Python's JSON handling is.