October 2011
Beginner
432 pages
10h 18m
English
Content preview from Sams Teach Yourself Java™ in 24 Hours, Sixth EditionBecome 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,
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How Object-Oriented Programming Works
You can think of the Java programs you create as objects, just like physical objects that exist in the real world. Objects exist independently of other objects, interact in specific ways, and can be combined with other objects to form something bigger. If you think of a computer program as a group of objects that interact with each other, you can design a program that’s more reliable, easier to understand, and reusable in other projects.
In Hour 23, “Creating Java2D Graphics,” you create a Java program that displays pie graphs—circles with different-colored pie slices to represent data (see Figure 10.1). A pie chart is an object that is made up of smaller objects—individual slices of different colors, a legend ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.