Lab Assignment $10$

$20232024$ Fall, CMPE $113$ Fundamentals of Programming I

Question $1$

Write a class called Product with the following variables and methods.

Variables $(5$ points$)$

$($All variables should be declared as private.$)$

$$ name $->$String

$$ price $->$ double

$$ quantity $->$ int

Methods $(20$ points$)$

$$ get and set methods for all variables.

$$ setProductInformation method gets name and quantity as parameter and sets related

variables.

$$ printInfo method prints the product information as given in the sample output.

Question $2$

Write a class called Storage which has a main method. First create an array of products with an

initial size of $0.($ Product$[]$ products $=$ new Product$[0]$; $)$

Your program should perform four different operations and it should ask for an operation until user

enters $5.$

$1-$Add product $(20$ points$)$

$$ Ask for product name and quantity.

$$ Create a new Product object and set related information by using setProductInformation

method.

$$ Increase the size of products array and add the new product to the array.

Let$$s remember how to increase size of an array:

o create a new temporary array of size$+1$

o copy all items of the original array to temporary array and add the new item to the

last slot of temporary array

o assign temporary array to the original array

$2-$Enter price $(15$ points$)$

$$ Ask for name of the product. $($You may assume that an existing product name will be

entered.$)$

Computer Engineering Department

$2$

$$ Ask for price of the product.

$$ Find the related product in products array by using a loop, and set price of the student by

using setPrice method.

$3-$Print products $(10$ points$)$

$$ Print information of all products by using printInfo method in a loop.

$4-$Calculate total cost $(30$ points$)$

$$ First, check whether all products have prices.

o If there is at least one product without price, print an error message and list product

names which do not have price values. $($see sample output$)$

o Otherwise, calculate cost of each product by multiplying quantity with price.

o You can calculate total cost by summing the costs.

$5-$Exit

$$ Print $$Bye$!$ and terminate the program.

Analyze sample output given below and write your codes accordingly.