OCP Oracle Certified Professional Java SE 11 Programmer I Study Guide

Chapter 2Java Building Blocks

OCP exam objectives covered in this chapter:

•   Working With Java Primitive Data Types and String APIs
  • Declare and initialize variables (including casting and promoting primitive data types)
  • Identify the scope of variables
  • Use local variable type inference
•   Describing and Using Objects and Classes
  • Declare and instantiate Java objects, and explain objects’ lifecycles (including creation, dereferencing by reassignment, and garbage collection)
  • Read or write to object fields

 As the old saying goes, you have to learn ...