Remote Object Activation
|JDK 1.2 Contents|
UnicastRemoteObjectcould be accessed from a server program that (1) created an instance of the remote object, and (2) ran all the time. Now with the introduction of the class
java.rmi.activation.Activatableand the RMI daemon,
rmid, programs can be written to register information about remote object implementations that should be created and execute "on demand", rather than running all the time. The RMI daemon,
rmid, provides a JVM from which other JVM instances may be spawned.
Starting out with activation
None of the activation tutorials should be the first material you read on RMI. If you have never used RMI before, you should take a look at Getting Started before you try these. The first three activation tutorials are intended for developers who have had some experience developing Java programs that access remote objects by means of the RMI classes provided as part of the JDK.
UnicastRemoteObject, to a class that extends
Activatable.exportObjectin the constructor of a class that does not extend from
Activatable, and how to create a remote interface, based on the methods that should be made available to remote clients.
MarshalledObjectis intended for developers who have gone through at least one of the first three activation tutorials. More tutorials may be added to this section in the next release, based on your feedback.
For all of the source code used in the activation tutorials, you may choose from these formats:
We are very interested in knowing whether these tutorials are useful. Please send any comments or suggestions to: firstname.lastname@example.org, with a subject of "activation tutorials".