August 2020
Intermediate to advanced
1296 pages
30h 50m
English
book
OCP Oracle Certified Professional Java SE 11 Developer Complete Study Guide
by Jeanne Boyarsky, Scott Selikoff
Content preview from OCP Oracle Certified Professional Java SE 11 Developer Complete Study Guide
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Chapter 5Core Java APIs
OCP EXAM OBJECTIVES COVERED IN THIS CHAPTER:
- Working with Java Primitive Data Types and String APIs
- Create and manipulate Strings
- Manipulate data using the StringBuilder class and its methods
- Working with Java Arrays
- Declare, instantiate, initialize and use a one-dimensional array
- Declare, instantiate, initialize and use a two-dimensional array
- Programming Abstractly Through Interfaces
- Declare and use List and ArrayList instances
In the context of an Application Programming Interface (API), an interface refers to a group of classes or Java interface definitions giving you access to a service or functionality.
In this chapter, you will learn about many core data structures in Java, along with the most common APIs ...
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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.