Given:

and omitting the throws FooException clause results in a compilation error.
Which statement is true about FooException?

A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

Given:

Which three actions implement Java SE security guidelines? (Choose three.)

Given:

It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?

Given the code fragment:

Which "for" loop produces the same output?