Assignment $3$

A cafeteria receives orders in text files named $($order#$.$txt$).$ Where # is the order number starting from $1.$ For example $($order$1.$txt order$2.$txt order$3.$txt $...$ orderN.txt$).$ Where N is the last order number and it is not known when the code is executed.

The following is an example of an order file:

Juice Apple SMALL

Sandwich Beef LARGE

Sandwich Chicken MEDIUM

The order file can contain one line or more, each line contains $3$ inputs:

TYPE MAIN$\_$INGREDIENT SIZE

TYPE can be Juice or Sandwich.

SIZE can be SMALL, MEDIUM, or LARGE.

MAIN$\_$INGREDIENT can be any single word ingredient, it is not important.

Answer the following questions:

Q$1(6$ points$)$: Write a Java program to loop over all the order files starting from order$1.$txt until the last order. HINT: You can check if you reached the last file by using the exists $()$ method from the class File. If for example your loop reaches order$10.$txt and it does not exist, this means that order$9.$txt was the last order, and you can break out of the loop.

Q$2(4$ points$)$: Compute the total income from all the orders and print it to the screen. Use the following information to compute the income:

$\backslash$table$[[$TYPE$,$price$],[$Sandwich$,0\mathrm{.}5],[$Juice$,0\mathrm{.}3]]$

$\backslash$table$[[$SIZE$,$price$],[$SMALL$,0\mathrm{.}0],[$MEDIUM$,0\mathrm{.}3],[$LARGE$,0\mathrm{.}5]]$

The total price for each item is TYPE$\_$price $+$ SIZE$\_$price