Java 6 Illuminated: An Active Learning Approach, 2nd Edition

280 CHAPTER 6 Flow of Control,Part 2: Looping

Introduction

Have you ever watched the cashier at the grocery store? Let’s call the cashier

Jane. Jane’s job is to determine the total cost of a grocery purchase. To

begin, Jane starts with a total cost of $0.00. She then reaches for the first

item and scans it to record its price, which is added to the total. Then she

reaches for the second item, scans that item to record its price, which is

added to the total, and so on. Jane continues scanning each item, one at a

time, until there are no more items to scan. Usually, the end of an order is

signaled by a divider bar laying across the conveyor belt. When ...