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Type of objects that can be sent in RMI

Rohit Bhagwat
Ranch Hand

Joined: Dec 19, 2004
Posts: 205
Hello sir, madam and my dear friends
I read in book that if you want to send any objects from client to server in RMI then they must satisfy the following conditions
1. It must be a serializable object
2. It must be either a primitive type
3. Array or collection of primitive type or serializable object
4. Remote Object

I have doubt regarding Remote object. As per the book they say that when you pass a remote object to a remote method then java actually sends remote object stub.
Now my question is what is the use of stub at server side. My understanding is that java sends remote stub by serializing it.

Please correct me if I am wrong.
Waiting for your replies.

Thanks and Regards
Edward Harned
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Joined: Sep 19, 2005
Posts: 291

Yes it's a bit confusing.

A common use of passing a remote object is for client callback. There is a tutorial at Sun on using callback. You should read that for an understanding of remote object passing.

The client passes a remote object of itself to the server. The server uses that remote object to call the client. That's why it is said to be the stub, so the receiver can call methods on that remote object.

Ed's latest article: A Java Reactive Generator
I agree. Here's the link:
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