Java Platform, Enterprise Edition (Java EE) 8
The Java EE Tutorial
A resource is a program object that provides connections to such systems as database servers and messaging systems. Java EE components can access a wide variety of resources, including databases, mail sessions, Java Message Service objects, and URLs. The Java EE platform provides mechanisms that allow you to access all these resources in a similar manner. This chapter examines several types of resources and explains how to create them.
The following topics are addressed here: