I am 17, I am on probation. I recently got a driving without a licence. Will this violate my probation?

Maybe, what is your probation for, driving without a license, then most likely yes.
If you are on probation for robbery, or theft most likely not. As long as you notified your PO right away you may be OK, not telling the PO is a serious offense and will most likely get you violated for sure

I joyrode in a car, but they didn't suspend my licence or anything. They just put me on probation, and community service. In the morning I will be sure to tell my PO. Thank you.

I joyrode in a car, but they didn't suspend my licence or anything. ....

So how come you were caught without a license? You have a license but just didn't bring it with you?