September 2016
Intermediate to advanced
704 pages
18h 29m
English
Content preview from OCA Java SE 8 Programmer I Certification Guide
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Chapter 3. Methods and encapsulation
|
Exam objectives covered in this chapter |
What you need to know |
|---|---|
| [1.1] Define the scope of variables. | Variables can have multiple scopes: class, instance, method, and local. Accessibility of a variable in a given scope. |
| [2.3] Know how to read or write to object fields. | Object fields can be read from and written to by directly accessing instance variables and calling methods. The correct notation to call methods on an object. Methods may or may not change the value of instance variables. Access modifiers affect access to instance variables and methods that can be called using a reference variable. Nonstatic methods can’t be called on uninitialized objects. |
| [2.4] Explain an Object's Lifecycle ... |
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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.
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