What is the use of documentation comment??

Answer 1

JAVADOC allows you to easily create documentation while you're programming. You get the benefit of your comments in your code, and you get the benefit of being able to generate an HTML via JAVADOC that has all of the comments you created for your methods, classes, etc.. It's very useful and something I recommend learning to use. It's one of those "two birds with one stone" type of things.

Answer 2

to remind you of what you are doing just like writing an pseudo algorithm

Answer 3

Or what you did when you finish the code.