OCA Oracle Certified Associate Java SE 8 Programmer I study guide: exam 1Z1-808 9781118957400, 9781118957417, 9781118957424, 2147483648, 1118957407, 1118957415, 1118957423

Table of contents :
Cover
Title Page
Copyright
Contents
Introduction
The OCA Exam
Scheduling the Exam
The Day of the Exam
Finding Out Your Score
Exam Questions
Getting Started
Getting Help
Who Should Buy This Book
How This Book Is Organized
Free Online Learning Environment
Conventions Used in This Book
OCA Exam Objectives
Assessment Test
Answers to Assessment Test
Chapter 1 Java Building Blocks
Understanding the Java Class Structure
Fields and Methods
Comments
Classes vs. Files
Writing a main() Method
Understanding Package Declarations and Imports
Wildcards
Redundant Imports. Naming ConflictsCreating a New Package
Code Formatting on the Exam
Creating Objects
Constructors
Reading and Writing Object Fields
Instance Initializer Blocks
Order of Initialization
Distinguishing Between Object References and Primitives
Primitive Types
Reference Types
Key Differences
Declaring and Initializing Variables
Declaring Multiple Variables
Identifiers
Understanding Default Initialization of Variables
Local Variables
Instance and Class Variables
Understanding Variable Scope
Ordering Elements in a Class
Destroying Objects
Garbage Collection
finalize() Benefits of JavaSummary
Exam Essentials
Review Questions
Chapter 2 Operators and Statements
Understanding Java Operators
Working with Binary Arithmetic Operators
Arithmetic Operators
Numeric Promotion
Working with Unary Operators
Logical Complement and Negation Operators
Increment and Decrement Operators
Using Additional Binary Operators
Assignment Operators
Compound Assignment Operators
Relational Operators
Logical Operators
Equality Operators
Understanding Java Statements
The if-then Statement
The if-then-else Statement
The switch Statement
The while Statement. The do-while StatementThe for Statement
Understanding Advanced Flow Control
Nested Loops
Adding Optional Labels
The break Statement
The continue Statement
Summary
Exam Essentials
Review Questions
Chapter 3 Core Java APIs
Creating and Manipulating Strings
Concatenation
Immutability
The String Pool
Important String Methods
Method Chaining
Using the StringBuilder Class
Mutability and Chaining
Creating a StringBuilder
Important StringBuilder Methods
StringBuilder vs. StringBuffer
Understanding Equality
Understanding Java Arrays
Creating an Array of Primitives. Creating an Array with Reference VariablesUsing an Array
Sorting
Searching
Varargs
Multidimensional Arrays
Understanding an ArrayList
Creating an ArrayList
Using an ArrayList
Wrapper Classes
Autoboxing
Converting Between array and List
Sorting
Working with Dates and Times
Creating Dates and Times
Manipulating Dates and Times
Working with Periods
Formatting Dates and Times
Parsing Dates and Times
Summary
Exam Essentials
Review Questions
Chapter 4 Methods and Encapsulation
Designing Methods
Optional Specifiers
Return Type
Method Name
Parameter List.

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