Jetty: Pass object from main method to servlet

Question

I have two classes Server (with the main method, starting the server) and StartPageServlet with a Servlet.

The most important part of the c

Answer 1

Singleton

You want to pass the same single instance to each servlet?

Use the Singleton pattern to create a single instance that is available globally.

The simplest fool-proof way to do that in Java is through an Enum. See Oracle Tutorial. Also see this article and the book Effective Java: Programming Language Guide, Second Edition (ISBN 978-0-321-35668-0, 2008) by Dr. Joshua Bloch.

So no need to pass an object. Each servlet can access the same single instance through the enum.

Per web app

If you want to do some work when your web app is first launching but before any servlet in that web app has handled any request, write a class that implements the ServletContextListener interface.

Mark your class with the @WebListener annotation to have your web container automatically instantiate and invoke.