Question

LABWORK

Design and Implement a Vending Machine Simulator that has functions :

• Show Products : Display Name , Description and Price of the Products

• Insert Coin : Allows user to Add a USD coin into the machine

allowed types are : Nickel(0.05) , Dime(0.1) , Quarter(0.25) and Dollar (1)

• Buy: If the sufficient amount of coins are thrown into the machine , machine should dispense the cold drink , and remove it from its product inventory. If insufficient amount is entered machine should throw a VendingMachineException.

• Quit : Ends the program.

Trodad toden

Questıon is;

Create an Activity Diagram for Buy Coke Zero operation include all possible scenarios(Insufficient coin added, no coke left on vending machine etc.) and create a Sequence/Communication diagram for Insert Coin operation.

Answer 1

Customer is shown the following details: NAME DESCRIPTION PRICE Order input of the item is taken by the customer Is requested item available? 0 Display: No coke left in vending machine Start Yes Customer is requested to put in the required amount of coins. Termination Give the customer Coke Zero and decrease the number of items by one. Is amount of coins sufficient Are coins of allowed type? Display error message Coins not YES Termination NO YES NO Insufficient coins added! Termination Termination

Vending machine Customer Software 1. Machine asks customer to add coins and opens coin input tray 3. Coins are checked for acceptable denominations via software 2.Customer inserts coins 4. If coins acceptable, software instructs machine to close tray. 5. Machine shows message: Amount received
Any doubts, please ask as thumbs down won't solve the doubt. Thanks!