Answer Posted / bhavya

Remote Method Invocation (RMI) facilitates object function calls between Java Virtual Machines (JVMs). JVMs can be located on separate computers - yet one JVM can invoke methods belonging to an object stored in another JVM. Methods can even pass objects that a foreign virtual machine has never encountered before, allowing dynamic loading of new classes as required. This is a powerful feature!

Consider the follow scenario :

Developer A writes a service that performs some useful function. He regularly updates this service, adding new features and improving existing ones.
Developer B wishes to use the service provided by Developer A. However, it's inconvenient for A to supply B with an update every time.
Java RMI provides a very easy solution! Since RMI can dynamically load new classes, Developer B can let RMI handle updates automatically for him. Developer A places the new classes in a web directory, where RMI can fetch the new updates as they are required.

you can get more on it at javacoffeebreak.com

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