Worst experience with cs profs? Oh boy....

Databases lab: "You'll need to work of this snippet, if your IDE tells you it's deprecated you don't need to care about it"
If you want to imagine the quality of the code base we were expected to work upon just think about that attached xkcd comic, basically an undecipherable black box.

The instructions where at the same time micro managing everything (he gave us frickin variable names to use, and no good ones, no the database connection had to be called datbc, yeah very descriptive) and yet so obfuscated that I'm not completely sure he didn't resurrect Kant himself to ghostwrite for him.

He also didn't like us to use any Java feature that was to 'modern', for example for each loops since "they offer no benefit over normal for loops".

Further, everything we wrote had to be documented with a relationship diagram and a uml. So far no problem if he hadn't invented his own flavor of both (which can be read about in his book).
Oh, and he almost failed me because I used a lambda expression in his 'code on paper' exam and this "arrows are a C command" I "must have been confused"... which is glorious coming from the guy who can't get operators and commands straight.