Create a container in java from scratch

I would like to create a container in Java, and ultimately what I would expect would be a thin version of state-of-art Java EE Containers like EJB container or web container etc.

Basically, the container is expected to handle the intricate transaction and state management, multithreading, resource pooling, and other complex low-level details. And users just submit their respective reusable components (some small java applications). In addition, the container is expected to provide a small number of underlying services in the form of a container for every component type.

Is there any existing source code where I can refer to? Thanks a lot in advanced.