public class BikePart { private String name; private double regPrice; private double salesPrice; private boolean onSale public BikePart(String n, double rp, double sp, boolean os) { name = n; cost = c; regPrice = rp; salesPrice = sp; } public String getName() { return name; } public double getSalesPrice() { return salesPrice; } public boolean onSale() { return onSale; } } 

Write a method greatSale that has one parameter - ArrayList bpal. The method returns an ArrayList that contains the names of all BikePart objects in bpal that are on sale and cost less that $20.00.