October 2017
Beginner
318 pages
7h 26m
English
Content preview from Java Programming for Beginners
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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.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.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.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.
Giving control to the user
ArrayLists have a lot of power contained within them. We can turn them into arrays, create them from arrays, and all sorts of things. If we go to the Java documentation and check under java.util for ArrayList, we can find all of their methodologies. Let's add few more features to our ArrayList program so that I can walk you through some common ArrayList methods.
ArrayLists have a function that takes no input, called clear(), which will erase our ArrayList. We can utilize this function to give our users some control over our program. Let's say that if the user inputs the string CLEAR, we would like to erase all of the information in our ArrayList. Well, that's a conditional statement I just made, so we use an if ...
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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.
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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.