Must I always number my code while coding with java

Question

must I number my code

Answer 1

U mean ... just like i number my public codes
//i remember number fast ... & a rough image is formed in my mind about the position of code ... so its become easy to locate an old code amongst many codes
example - its my 70 th public code here ...
https://code.sololearn.com/cWuY8IrGWnDh/?ref=app

Answer 2

I didn't get the "numbering code" thing. If you're asking about the line numbers of code, you don't need to write it. To be more precise, it will cause error if you write the serial numbers in code. The IDE does it for you. Were you asking for something else? :) Correct me if I'm mistaken.

Answer 3

I mean must you number your code before it runs the code