Can we juggle the ball while in play?

[potato]

For example A1 is holding the ball standing still, can he juggle the ball from his left hand to his right vice versa (ball leaves hand before contact with the other hand) like what players tend to do before making their Free Throws?

Also can i do something similar when going for the basket by switching shooting hands by throwing the ball from my left hand to my right before shooting instead of the normal hand switch where the ball is always in contact with one of the hands?