Lol I guess now I'm equipped to understand basic code jokes like this one :P
I actually have all my comments like this and I actually have way more //comments than the ones I include on my hive posts as I delete all the idiotic ones that I type to not forget the tiniest detail...
To answer the question, Yes and no, I tend to do my own examples but based on training courses or videos I watch to understand the topic at hand, otherwise I would just be copying and pasting with no real learning, but by keeping the logic but changing variable names and everything else, I make myself think more and understand the logic behind the examples.
At some point I watched a video where the recommendation was to documentation as short as possible, only explaining with keywords and such, and then I was there looking at my .js files which are half comments half code thinking "damn, maybe I'm overcommenting" but I don't mind, I'm not coding to be cool :P
Getting used to writing a lot of comments is a great habit. You can take your code and just show it around without any worries, as long as you use English in addition to your alien code from java, it will improve the experience for your fellow humans.
In my teams, we always had common rules for docs, but never for coding style. So, that tells a lot already.