OCP Oracle Certified Professional Java SE 17 Developer Study Guide

Chapter 6Class Design

OCP EXAM OBJECTIVES COVERED IN THIS CHAPTER:

• Utilizing Java Object-Oriented Approach
  • Create classes and records, and define and use instance and static fields and methods, constructors, and instance and static initializers
  • Understand variable scopes, use local variable type inference, apply encapsulation, and make objects immutable
  • Implement polymorphism and differentiate object type versus reference type. Perform type casting, identify object types using instanceof operator and pattern matching

In Chapter 1, “Building Blocks,” we introduced the basic definition of a class in Java. In Chapter 5, “Methods,” we delved into methods and modifiers and showed how you can use them to build more structured classes. ...