Rewrite Exercise to store the answers in a set rather than a list.

Write a program that creates an ArrayList and adds a Loan object, a Date object, a string, and a Circle object to the list, and use a loop to display all the elements in the list by invoking the object’s toString() method.

Rewrite Exercise to store the answers in a set rather than a list.

Rewrite Listing RepeatAdditionQuiz.java to alert the user if an answer is entered again. Hint: use an array list to store answers. Here is a sample run:

Listing