Part $1$:

$1.$ For this program you will be creating grocery item objects, putting them into an array of objects, and working with them.

$2.$ Create a new Java project called Lab$7\_2$A$.$

$3.$ Create a second class in the project named Item with the following:

a$.4$ instance variables

i$.$ itemName $($String$)$

ii$.$ itemPrice $($double$)$

iii. itemQuantity $($double$)$

iv$.$ itemTotalCost $($double$)$

b$.$ A constructor that receives inName $($String$),$ inPrice $($double$)$ and inQty $($double$)$ as parameters and fills in the instance variables with the parameter values

It should also call computeCost.

c$.$ A void method named computeCost that calculates itemTotalCost by multiplying itemQuantity by itemPrice

d$.$ A double method named getTotalCost that returns itemTotalCost

e$.$ A String method named getItemName that returns itemName.

f$.$ A String toString method that returns a String of all the instance variables with labels. $($As we have done in previous lab assignments.$)$

g$.$ Make all the instance variables private and the methods public. The methods will not have parameters unless the instructions list them.

$4.$ Back in the main method

a$.$ Create an array named cartArray of $4$ Item objects.

b$.$ For each element in cartArray

i$.$ Read the item name, price, and quantity from the text file $($Input$7\_2$A$.$txt$).($You will want to have local variables to hold these.$)$

ii$.$ Instantiate the object sending those $3$ pieces of data as parameters.

iii. Print the object using the toString shortcut.

iv$.$ Get the total cost for that item $($using the getTotalCost method$)$ and add it to a local variable named subtotal

c$.$ Calculate the tax for the whole order by multiplying subtotal by $0\mathrm{.}0825$

d$.$ Calculate the total for the order by adding subtotal to tax.

e$.$ Print a blank line and then print subtotal, tax, and total each on their own line with a label.

f$.$ Use a new for$-$each loop to go through the array and find the item with the highest itemTotalCost.

g$.$ After the loop print a blank line and then the highest itemTotalCost and its item name.

$*$Note $$ Print all monetary amounts $($price$,$ tax, subtotal, etc. with $2$ decimal places$)$

Reminder: You can do this by replacing itemPrice with String.format$("$$$\%\mathrm{.}2$f$",$ itemPrice$)$ when you print it or add it to toString$$s return value.

Part $2$:

$1.$ Create a new Java project named Lab$7\_2$B$.$ In this program you will be reading in a file of daily temperatures for a month and determining the lowest, highest and average temp for that month.

$2.$ Write a void method named fillList that receives an ArrayList of doubles as a parameter. It should do the following:

a$.$ Read the month and year $($integers$)$ from the text file $($Input$7\_2$B$.$txt$)$ and print those values with labels. $($You must set up the text file inside this method, not in main.$)$

b$.$ Read the daily temperatures and add them to the ArrayList.

$3.$ Write a double method that receives an ArrayList of doubles and returns the highest value in the list.

$4.$ Write a double method that receives an ArrayList of doubles and returns the lowest value in the list.

$5.$ Write a double method that receives an ArrayList of doubles and returns the average temperature in the list.

$6.$ Back in the main method:

a$.$ Create an ArrayList of doubles.

b$.$ Call fillList to fill in the ArrayList.

c$.$ Call your other $3$ methods and print their returned values.

Part $3$:

$1.$ In program Lab$7\_2$C you will be working with an ArrayList of objects.

$2.$ Create a second class named Visit and copy the Visit class from Lab$6\_2$A into it$.($Make sure you keep Lab$7\_2$C$$s package statement and don$$t copy Lab$6\_2$A$$s over.

a$.$ Add a new String method named getType to Visit that will return the animal$$s type.

b$.$ Add a new String method named getName to Visit that will return the animal$$s name.

$3.$ Back in your main class:

a$.$ Write a void method that receives an ArrayList of Visit objects and a String animal type $($cat$,$ dog, etc.$)$ It should print all the objects with that type of animal.

b$.$ Write a boolean method that receives an ArrayList of Visit objects and an animal name $($String$).$ It should return a true if the animal is found in the ArrayList and a false otherwise.

c$.$ Write a method that will return a Visit object and receives an ArrayList of Visit objects. It should find and return the Visit object with the highest cost.

d$.$ In the main method you should do the following:

i$.$ Create an ArrayList of Visit objects.

ii$.$ Read the values for each object from the text file $($Input$7\_2$C$.$txt$)$ and for each set of data, create the object and add it to the ArrayList.

iii. Ask the user to input an animal type and then call the method from #a sending the ArrayList and animal type as parameters.

iv$.$ Ask the user to input an animal name and then call the method from #b sending the ArrayList and animal type as parameters. Print a statement saying whether the name was found or not.

v$.$ Call the method from #c sending the ArrayList as a parameter and print the returned object. $($Also print a statement that this is the highest cost v