Chapter 5Core Java APIs


  • 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 ...

Get OCP Oracle Certified Professional Java SE 11 Developer Complete Study Guide now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.