I've realised what the real problem with Java is, for me. It's not the fact that my productivity is much lower with Java than it is with Python. After all, it's my management that decide that I should be using Java, and if they want to make me less productive than I could be, it's their prerogative.

And it's not the vast raft of tools, libraries and frameworks that a modern Java application uses that bothers me. It's a problem for a lot of people - c.f. Bruce Tate's superb Better, Faster, Lighter Java (on which more later), but I like learning new stuff, so I'm happy.

No, the problem is that Java coding is just no fun...