A lot of programmers/software engineers tell new guys "get your hands wet".
What does that mean?
Does that mean "do it yourself"?
This book says
Before you get your hands wet trying your first Java program, you need to learn some basic concepts …
it seems that "get your hands wet" means write some code personally?
is it a verb? how can I use this phrase properly?
Best Answer
It's likely somebody getting confused between two different idioms.
get your feet wet
get your hands dirty
From the context of the passage, both get your feet wet and the first sense of get your hands dirty are possible. It's even possible that a combination of those two were meant and the hybrid phrase was used deliberately. However, I find that unlikely.
In short, I would not use the exact phrase that was used in the question. Instead, use one of the actual idioms.
The first means ease into things and the second means do some actual work (rather than just theory, in the context of programming).
They are not mutually exclusive. In theory, they could even be combined:
However, that sounds bizarre because they aren't meant to be combined that way.