RMI Exam

In this assignment, you are requested to build a system which allows a school pupil to practise multiple choice tests in math. Design and implement a RMI-based Client / Server communication system in Java, which will do the following:

Client:

• Connect to server via client_stub.
• Read and display the prompt message sent (see step s2 in server) by the server.
• Receives and displays the first math question plus three possible answers from the server.
• User then selects and inputs only one answer and the client program sends the answer to the server. This process is repeated three times to complete all 3 questions from the server Questions database
• After the test is over the client accepts and displays the test results and score from the server.

Server:

• [Initialization] Create a RMI-based server which implements a test interface.
• Wait for a client connection.
• When a client connection is accepted send an acknowledgement (a welcome message) as a sting of text.
• From Questions database, server sends the first test questions plus three possible answers to the client.
• Receives the answer from the client. Stores and evaluates the answer. This process is repeated three times.
• After that the server sends all results and score to the client.
• Close the connection to the client and then loop back and wait for another connection.

Questions database:

Q1: (A + B)*(A+B)
1. A*A + B*B
2. A*A +A*B + B*B
3. A*A +2*A*B + B*B (correct)

Q2: (A + B)*(A - B)
1. A*A + 2*B*B
2. A*A - B*B (correct)
3. A*A -2*A*B + B*B

Q3: sin(x)*sin(x) + cos(x)*cos(x)
1. 1 (correct)
2. 2
3. 3

Note: All the communication between the Client and the Server should be in the form of strings.