Way to use Scanner properly?

Question

That's it, I've been trying to make a scanner to put some characters, and it keeps showing me error, in the Pc it isn't showed and runs properly.

What am I missing in here?

Any clue will be helpful.

Thanks in advance

Here down is the code.
https://code.sololearn.com/cU7xOTipsfN0/?ref=app

Answer 1

Ohhh, me bad. I'm new in here, I'm actually doing java at University and doing GeneXus as particular study. Thank you for your time and patience

Answer 2

If I add that above Class Program, keeps giving me error