Have you ever wondered how your program will connect to other hosts?
Well, I can tell you the answer for Java (any version) and compare it to Python. It is a 90’s implementation, and there is not even a good way to fix it.
The DNS (short for Domain Name System) is a technology used to get IP addresses from host names and vice versa. Actually, it is much more versatile than this and can also return text-based entries, etc.