Files Description

Calculator.java

This file defines the remote interface for the calculator service. It declares the following methods:

• void pushValue(int val): Pushes a value onto the stack.
• void pushOperation(String operator): Pushes an operator ("min", "max", "lcm", "gcd") onto the stack, causing the server to pop all values and perform the corresponding operation.
• int pop(): Pops the top value from the stack and returns it.
• boolean isEmpty(): Returns true if the stack is empty, false otherwise.
• int delayPop(int millis): Waits for the specified milliseconds before performing the pop operation.

CalculatorImplementation.java

This file provides the implementation of the Calculator interface. It includes methods to handle the stack operations and perform the required calculations:

• The stack is maintained using a Stack<Integer>.
• The pushValue and pushOperation methods are synchronized to handle concurrent access.
• The pushOperation method includes the logic for "min", "max", "lcm", and "gcd" operations.

CalculatorServer.java

This file contains the server class which:

• Starts the RMI registry on port 1099.
• Creates an instance of CalculatorImplementation.
• Binds the CalculatorImplementation instance to the RMI registry with the name CalculatorService.

CalculatorClient.java

This file contains a simple test client which:

• Connects to the CalculatorService on the RMI server.
• Pushes values and operations onto the stack.
• Pops and prints the result of the operations.