Using of brush-up skills

msn · September 28, 2021, 5:27am

Context:
I learned Java 4 months ago.
Today again I have to work on the same language. So I am going through Java at a high-level.
Can I say:
I brushed up my skills for Java?

Sub-question:
Have + learnt - is correct?

Thanks!

Torsten · September 28, 2021, 5:32am

I’ve been brushing up on my Java skills.

msn · September 28, 2021, 6:28am

Thanks Torsten, for the brief and clear answer!