November 2024
Intermediate to advanced
1040 pages
25h 29m
English
book
OCP Oracle Certified Professional Java SE 21 Developer Study Guide
by Jeanne Boyarsky, Scott Selikoff
Content preview from OCP Oracle Certified Professional Java SE 21 Developer Study Guide
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Chapter 9Collections and Generics
In this chapter, we introduce the Java Collections Framework classes and interfaces you need to know for the exam. The thread-safe collections are discussed in Chapter 13, “Concurrency.”
As you may remember from Chapter 8, “Lambdas and Functional Interfaces,” we covered lambdas, method references, and built-in functional interfaces. Many of these are used throughout this chapter.
Next, we cover details about Comparator, Comparable, and sorting. We also introduce the new sequenced collections interfaces. ...
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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.