java - Concurrent access to static methods

Question

I have a static method with the following signature:

public static List<ResultObjects> processRequest(RequestObject req){
  // process the request object and return the results.
}

What happens when there are multiple calls made to the above method concurrently? Will the requests be handled concurrently or one after the other?

Answer 1

Answering exactly your question:

1. Method will be executed concurrently (multiple times in the same time if you have several threads).
2. Requests will be handled concurrently.

You need to add the synchronized modifier if you are working with objects that require concurrent access.