September 2021
Beginner
560 pages
12h 4m
English
Content preview from Beginning Programming with Java For Dummies, 6th Edition
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Chapter 5
Composing a Program
IN THIS CHAPTER
Reading input from the keyboard
Editing a program
Shooting at trouble
Just yesterday, I was chatting with my servant, RoboJeeves. (RoboJeeves is an upscale model in the RJ-3000 line of personal robotic life-forms.) Here’s how the discussion went:
- Me: RoboJeeves, tell me the velocity of an object after it’s been falling for three seconds in a vacuum.
- RoboJeeves: All right, I will. “The velocity of an object after it’s been falling for three seconds in a vacuum.” There, I told it to you.
- Me: RoboJeeves, don’t give me that smart-alecky answer. I want a number. I want the actual velocity.
- RoboJeeves: Okay! “A number; the actual velocity.”
- Me: RJ, these cheap jokes are beneath your dignity. Can you or can’t you tell me the answer to my question?
- RoboJeeves: Yes.
- Me: “Yes” what?
- RoboJeeves: Yes, I either can or can’t tell you the answer to your question.
- Me: Well, which is it? Can you?
- RoboJeeves: Yes, I can.
- Me: Then do it. Tell me the answer.
- RoboJeeves: The velocity is 153,984,792 miles per hour.
- Me (after pausing to think): RJ, I know you never make a mistake, but that number — 153,984,792 — is much too high.
- RoboJeeves: Too high? That’s ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.