java rmi case study

# java rmi (remote method invocation) tutorial with case study

java rmi (remote method invocation) allows java programs to invoke methods that reside on different java virtual machines (jvms), whether they are on the same machine or on different machines across a network. this tutorial will provide an overview of rmi, followed by a case study that involves creating a simple rmi application.

## overview of java rmi

### key components
1. **remote interface**: defines the methods that can be called remotely.
2. **remote object**: implements the remote interface and contains the business logic.
3. **rmi registry**: a simple naming service that allows clients to look up remote objects.
4. **client**: the application that invokes methods on the remote object.

### steps to create an rmi application
1. define the remote interface.
2. implement the remote interface.
3. create the server that registers the remote object with the rmi registry.
4. create the client that looks up the remote object and invokes methods.

## case study: simple calculator application

### step 1: define the remote interface

### step 2: implement the remote interface

### step 3: create the rmi server

### step 4: create the rmi client

### step 5: compile and run the application

1. **compile the java files**:


2. **start the rmi registry**:
open a terminal and run:

(this usually runs on port 1099 by default.)

3. **run the rmi server**:
in another terminal, run:


4. **run the rmi client**:
in another terminal, run:


### sample output
when you run the client after starting the server, you should see an output similar to:

## conclusion

in this tutorial, we created a simple rmi application consisting of a calculator server and a client. we defined a remote interface, implemented it, an ...

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