What is the difference between Java RMI and RPC

Question

What is the actual difference between Java RMI and RPC    I have read in some places that RMI uses Objects

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The only real difference between RPC and RMI is that there is objects involved in RMI  instead of invoking functions through a proxy function  we invoke methods through a proxy

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The main difference between RPC and RMI is that RMI involves objects  Instead of calling procedures remotely by use of a proxy function  we instead use a proxy object   There is greater transparency with RMI  namely due the exploitation of objects  references  inheritance  polymorphism  and exceptions as the technology is integrated into the language   RMI is also more advanced than RPC  allowing for dynamic invocation  where interfaces can change at runtime  and object adaption  which provides an additional layer of abstraction

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1  Approach   RMI uses an object-oriented paradigm where the user needs to know the object and the method of the object he needs to invoke   RPC doesn t deal with objects  Rather  it calls specific subroutines that are already established   2  Working   With RPC  you get a procedure call that looks pretty much like a local call  RPC handles the complexities involved with passing the call from local to the remote computer   RMI does the very same thing  but RMI passes a reference to the object and the method that is being called   RMI   RPC   Object-orientation  3  Better one   RMI is a better approach compared to RPC  especially with larger programs as it provides a cleaner code that is easier to identify if something goes wrong   4  System Examples   RPC Systems  SUN RPC  DCE RPC  RMI Systems  Java RMI  CORBA  Microsoft DCOM COM   SOAP Simple Object Access Protocol

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Remote Procedure Call  RPC  is a inter process communication which allows calling a function in another process residing in local or remote machine     Remote method invocation  RMI  is an API  which implements RPC in java with support of object oriented paradigms     You can think of invoking RPC is like calling a C procedure  RPC supports primitive data types where as RMI support method parameters return types as java objects  RMI is easy to program unlike RPC  You can think your business logic in terms of objects instead of a sequence of primitive data types   RPC is language neutral unlike RMI  which is limited to java RMI is little bit slower to RPC    Have a look at this article for RPC implementation in C

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The difference between RMI and RPC is that    RMI as the name indicates Remote Method Invoking  it invokes a method or an object  And RPC it invokes a function

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RPC is C based  and as such it has structured programming semantics  on the other side  RMI is a Java based technology and it s object oriented   With RPC you can just call remote functions exported into a server  in RMI you can have references to remote objects and invoke their methods  and also pass and return more remote object references that can be distributed among many JVM instances  so it s much more powerful   RMI stands out when the need to develop something more complex than a pure client-server architecture arises  It s very easy to spread out objects over a network enabling all the clients to communicate without having to stablish individual connections explicitly

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RMI or Remote Method Invokation is   very similar to RPC or Remote   Procedure call in that the client   both send proxy objects  or stubs  to   the server however the subtle   difference is that client side RPC   invokes FUNCTIONS through the proxy   function and RMI invokes METHODS   through the proxy function  RMI is   considered slightly superior as it is   an object-oriented version of RPC    From here   For more information and examples  have a look here

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RPC is an old protocol based on C It can invoke a remote procedure and make it look like a local call RPC handles the complexities of passing that remote invocation to the server and getting the result to client   Java RMI also achieves the same thing but slightly differently It uses references to remote objects So  what it does is that it sends a reference to the remote object alongwith the name of the method to invoke It is better because it results in cleaner code in case of large programs and also distribution of objects over the network enables multiple clients to invoke methods in the server instead of establishing each connection individually

[java] What is the difference between Java RMI and RPC?

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