In this lab, we will try out Java RMI.

1. Hello World

Here are the files that make up the RMI client side of the RMI adder from the lecture:

• AdditionClient.java
• AdderInterface.java
• security.policy

Remember to adapt the project name to your own's project name in the VM arguments (in Eclipse, go to run configurations > Arguments > VM Arguments)

-Djava.security.policy=file:${workspace_loc}/RMIClientSide/security.policy (modify using your project name)

Task 1: Connect to the addition server (see the whiteboard for the IP address, the resource name is: ourAdder) and perform an addition.

Next, set up your own server. Here are the files for the server side:

• AdditionServer.java
• Adder.java
• AdditionInterface.java
• security.policy

Task 2: Connect to your own server.

3. Print Server

Write a client and a server so that the client can send a string to the server
and the server prints the string to standard output. Use the following interface:

• PrintInterface.java

An instance providing this service is running under the name "printer" on the machine shown on the whiteboard. You can use it for testing.

4. Echo Server

Write a client and a server so that the client can send a string to the server,
the server modifies the string (e.g., attaches a prefix to it) and returns it to the client,
and the client prints the string to standard output.

5. Broadcast Server

Write a server that accepts registrations from clients.
When a client sends a string to the server,
the server calls all registered clients and lets them print the string it received.
Hint: For this to work, you need to use remote object references.