Chapter 8
Saving Time and Money: Reusing Existing Code
IN THIS CHAPTER
Adding new life to old code
Tweaking your code
Making changes without spending a fortune
reuse /ree-YOOSS/ noun The act of using something for the nth time, where n is greater than 1. Example: “Reuse of the material in Java For Dummies, 8th Edition is strictly prohibited.”
Reuse is good but, in many situations, reuse is a rarity. For example, in the United States, the Department of Agriculture estimates that 30 to 40 percent of the nation's food goes to waste. And, according to one source, only 9 percent of the world's plastics are recycled.
Information goes to waste too. As I revise this chapter for the 8th edition, I'm deciding not to reuse the 7th edition's chapter introduction. (That introduction's made-up story isn't amusing in the least.) In desperation, I looked at some of my other books to find an introduction that I could reuse for this chapter. No luck! I came up empty-handed.
I can't even reuse paragraphs to explain common concepts. My description of Java classes from another book wouldn't work well in this book. I've even experienced times when I had to scrap sections in several chapters because ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access