How to organize a server part for a messenger in JAVA?

Question

Java

Hello. I am studying Java. There was an idea to write your own messenger. From the point of view of the client-server program code, there are no questions. The server listens on a specific port, and upon receiving certain messages, forwards the message to another client.
The question is, where can you "put" the server part of the messenger? That is, what should be the server? VPS, Cloud or own computer?