In order that you fully understand how to write Enterprise JavaBeans (EJBs), it is important that you understand where they reside.
In this module, I will create a map of the world in which distributed objects and constructors provide useful services to client programs.
This introduction will let you find your way within the technology that is introduced in the rest of the course.
Carefully read this section in preparation for the tutorial on Enterprise Java Beans.
The information in this section is the foundation for all that follows.
Message: Another name for a method call. Conveys the idea that the method call is invoked across a network.
Distributed object: An object somewhere on the network that provides some service that is known and available to clients.
constructor:A pseudo-method that creates an object.
Remote object: An object that provides a service through its methods and is located on another host on the network. The location of
the object needs to be known before its methods can be called.
Component: A physical and replaceable part of a system that conforms to and provides a realization of a set of interfaces.
Object monitor: The combination of remote object together with the environment that manages it and that allows method calls to the
Local resource: A resource, such as a database connection, that is accessible without traversing the network.
In the next lesson, clients and remote objects will be introduced.