How i can do variables aleatory

Question

I work in a test ,and i want to a aleatory var

Answer 1

Mismel Poulout here are two different examples in Java

https://code.sololearn.com/chi0ncHdbLwl/?ref=app
https://code.sololearn.com/cd58f5cuMLMo/?ref=app

Answer 2

Mismel Poulout here is one of my old codes which might help...

https://code.sololearn.com/cRWcG3XDpFpL/?ref=app

Answer 3

Brofar is not html no less javascript
I need code in java or html