Authorization via VK

Hi all! I'm doing a test. There is a web application. It is necessary to implement authorization through VK.
If successful, get it via API: - soap; - avatar; - list of friends with avatars. Does anyone know any ready-made Java libraries for this task? Or have you encountered something similar and how did you solve it?
ps I found a couple of libraries (spring-social-vkontakte), but if you share your experience, I will be grateful.