Library random?

Question

How can I put a random number into my code, I know I have to write Math.round(Math.random()*(b-a)+a) but i don't know if i have to use a extra library or something like that, please help D:

Answer 1

If it's Java, then you don't need any external library.

Answer 2

thank you all, I solved my problem :)

Answer 3

You can always use functions.