Can you connect a client from one programming language to a server who was built in another prog language?

I have a generic question about socket programming.. (Correct me if im not in the right subreddit :P )

if you built a client (for example) in python and you want to connect to this server using sockets with a client built by Java , It is even possible to do such a thing ? to connect between sockets with 2 different programming languages (In order to make a chat or to pass files between)

Thanks