COMP 310
Spring 2010

Lec23: RMI
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Today we will start exploring the world of Remote Method Invocation or "RMI".  

Information on RMI can be found in the Comp310 Java Resources web pages.

Download the demo code for today.    

UPDATE 3/13/10:  The bug in the code posted for class on 3/12/10 has been fixed!    Please download the latest code above!

To stop the running server,

  1. Change to the server's console by either closing the console of the client if it open by clicking the "x" on the console tab or by selecting the server's console by pulling down the "Display Selected Console" drop-list on the console tab.
  2. Click the red square "Terminate" button on the console tab. 

Things to try:

  1. Bind multiple Server implementations to the same name in the Registry:
    1. Start the original Server.
    2. Change the return value of sayHello() method of the Server class to return a different value.
    3. Without terminating the previous Server , run the Server again.
    4. Without modifying it, run the Client again.
    5. Even though the original Server is still running, what is the value retrieved by the Client?
  2. Bind multiple Server implemenations to different names in the Registry.
    1.  Start a version of the Server.
    2. Run the Client to verify the value returned is what you expect.
    3. Modify the Server's sayHello() method to return a different value.
    4. Modify the Server's run() method to bind the Hello object with a different name.
    5. Without terminating the previous Server , run the Server again.
    6. Without modifying it, run the Client again.   What value is returned?
    7. Modify the Client so that it accesses the new Registry binding name being used in the modified Server code above.
    8.  Run the Client again.   What value is returned?

 

 

 

 

 

© 2010 by Stephen Wong