I occasionally have to touch Java though I'm far more at home in e.g. Python. If you don't mind, a consist mention off the top of your head of things that people in my position should know about, as we Google our Java issues. I'm not cutting and pasting Stack Overflow answers, but even so they often do form the basis of ideas of the code that I write in the end. So pitfalls and modern replacements for ancient practices would be appreciated. Thank you!