Project $2$: An Application Employing Synchronized$/$Cooperating Multiple

Threads In Java Using Locks $$ A Banking Simulator$$

Points: $100$ points

Due Date: Sunday September $22,2024$ by $11$:$59$ pm $($WebCourses time$)$

Objectives: To develop an application which requires cooperating, synchronized

multiple threads of execution.

Project Overview: In this project you will simulate the deposits and withdrawals

made to fictitious bank accounts $($I$$ll let you use my real bank accounts if you

promise to make only deposits! J$).$ In this case the deposits and withdrawals will

be made by user agents $($synchronized threads$).$ Synchronization is required for

two reasons $(1)$ mutual exclusion $($updates cannot be lost$)$ and $(2)$ because a

withdrawal cannot occur if the amount of the withdrawal request is greater than

the current balance in the account. This means that access to the account $($the

shared object$)$ must be synchronized. This application requires cooperation and

communication amongst the various agents $($cooperating synchronized threads$).$

$($In other words, this problem is similar to the producer$/$consumer problem where

there is more than one producer and more than one consumer process active

simultaneously.$)$ If a withdrawal agent attempts to withdraw an amount greater

than the current balance in the account $$ then it must block itself and wait until a

depositing agent has added money to the account before it can try again. As we

covered in the lecture notes, this will require that the depositing agents signal all

waiting withdrawing agents whenever a deposit is completed.

Agents: There are five different types of agents in this simulation as follows:

$1.$ Depositor Agents: These agents add$(+)$ money to a bank account. To keep

things relatively simple, assume that deposits are made in random

amounts ranging from $$1$ to $$600($whole dollars only$),$ Depositor agents

never block.

$2.$ Withdrawal Agents: These agents remove$(-)$ money from a bank account.

Withdrawal agents will make withdrawals in random amounts ranging from

$$1$ to $$99($again$,$ whole dollars only$).$ Withdrawal agents block if the

balance of the account in question is less than the amount the withdrawal

CNT $4714$ Project $2$ Fall $2024$