Booking System JavaCode Eclipse

Question

I have a program which requires me to calculate a total price for a flight booking and I need to multiply that total by the number of passengers in an array list..

How do I do this if the array list that is being created is empty?

Or do I need to set a number on the number of elements in the array list?

Hope someone can help thanks.

Do you need this? https://stackoverflow.com/questions/9652732/how-to-find-the-length-of-an-array-list — Jakob F, Jun 13 '20 at 15:28
You can check the size of the list and based on that make a conditional operation. — Dhruv Saksena, Jun 13 '20 at 15:31

score 2 · Answer 1 · answered Jun 13 '20 at 15:30

ArrayList is a collection in Java that will automatically expand as you add elements to it.

Here's a simple example of how to compute the total revenue from a set ticket price:

BigDecimal ticketPrice = new BigDecimal("500.00");
List<Passenger> list = new ArrayList<>();
list.add(new Passenger(...);
list.add(new Passenger(...);
...
BigDecimal totalPrice = ticketPrice.multiply(new BigDecimal(list.size()));

Booking System JavaCode Eclipse

1 Answers1