rename initItems to getItems
read cart.txt by readAllLines
put cartItems into main
read text by readAllLines
update import of file
add setter and getter
get private fields by getter
add setter and getter of num
get num by getter
delete useless code
rename BarcodeProcessor to Cart
add Scanner Class
delete useless code
add getInputs function
delete useless code
add getCartItems function
delete useless codes
delete useless codes
new Printer class in java
delete Printer class