OCA: Oracle Certified Associate Java SE 8 Programmer I Study Guide

Full coverage of functional programming and all OCA Java Programmer exam objectives

OCA, Oracle Certified Associate Java SE 8 Programmer I Study Guide, Exam 1Z0-808 is a comprehensive study guide for those taking the Oracle Certified Associate Java SE 8 Programmer I exam (1Z0-808). With complete coverage of 100% of the exam objectives, this book provides everything you need to know to confidently take the exam. The release of Java 8 brought the language's biggest changes to date, and for the first time, candidates are required to learn functional programming to pass the exam. This study guide has you covered, with thorough functional programming explanation and information on all key topic areas Java programmers need to know. You'll cover Java inside and out, and learn how to apply it efficiently and effectively to create solutions applicable to real-world scenarios.

• Work confidently with operators, conditionals, and loops

• Understand object-oriented design principles and patterns

• Master functional programming fundamentals

Autorentext

Jeanne Boyarsky, OCA/OCP, has worked as a Java developer for a bank in NYC for 12 years where she develops, mentors and conducts training. In her free time, she is a senior moderator at CodeRanch and works on the forum code base.

Scott Selikoff, SCJP, has been a professional Java Enterprise developer for over 15 years. He currently operates Selikoff Solutions, LLC, which provides software consulting services to businesses in the tri-state New York City area.

Klappentext

Covers 100% of exam objectives, including developing Java applications, becoming proficient in Java data types, mastering operators and decision control structures, understanding encapsulation, class inheritance, polymorphism, and much more...

Includes interactive online learning environment and study tools with:

• 3 custom practice exams

• More than 200 Electronic Flashcards

• Searchable key term glossary

Your complete guide to helping you pass the OCA Exam 1Z0-808

The OCA: Oracle Certified Associate Java SE 8 Programmer I Study Guide is your one-stop resource for complete coverage of Exam 1Z0-808. This Sybex Study Guide covers 100% of all exam objectives. You'll prepare for the exam smarter and faster with Sybex thanks to superior content including, assessment tests that check exam readiness, objective map, real-world scenarios, hands-on exercises, key topic exam essentials and challenging chapter review questions. Reinforce what you have learned with the Sybex exclusive interactive online learning environment, accessible across multiple devices. Get prepared for the OCA exam with Sybex.

Coverage of 100% of all exam objectives in this Study Guide means you'll be ready for:

• Developing Java applications
• Becoming proficient in Java data types
• Mastering operators and decision control structures
• Constructing primitive and dynamic arrays
• Directing flow with loop mechanisms
• Defining methods, abstract and concrete classes, and interfaces
• Understanding encapsulation, class inheritance, and polymorphism
• Throwing and catching Java exceptions
• Working with the new Java 8 Local Date and Time API
• Introducing the new Java 8 Lambda predicate expressions
  Interactive learning environment

Take your exam prep to the next level with Sybex's superior interactive online study tools. To access our learning environment, simply visit http://www.sybex.com/go/ocajavase8, type in your unique PIN and instantly gain access to:

• Interactive online test bank with 3 practice exams, covering Exam 1Z0-808. Practice exams help you identify areas you need to study more. Get more than 90% of the answers correct, and you're ready to take the certification exam. 180 questions total!
• More than 200 Electronic Flashcards to reinforce learning and last minute prep before the exam
• Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared

Inhalt

Introduction xxi

Assessment Test xxxi

Chapter 1 Java Building Blocks 1

Understanding the Java Class Structure 2

Fields and Methods 2

Comments 4

Classes vs. Files 5

Writing a main() Method 6

Understanding Package Declarations and Imports 9

Wildcards 10

Redundant Imports 11

Naming Conflicts 12

Creating a New Package 13

Code Formatting on the Exam 16

Creating Objects 16

Constructors 17

Reading and Writing Object Fields 18

Instance Initializer Blocks 18

Order of Initialization 19

Distinguishing Between Object References and Primitives 20

Primitive Types 20

Reference Types 24

Key Differences 25

Declaring and Initializing Variables 25

Declaring Multiple Variables 26

Identifiers 27

Understanding Default Initialization of Variables 29

Local Variables 29

Instance and Class Variables 30

Understanding Variable Scope 31

Ordering Elements in a Class 34

Destroying Objects 36

Garbage Collection 36

finalize() 38

Benefits of Java 39

Summary 40

Exam Essentials 41

Review Questions 42

Chapter 2 Operators and Statements 51

Understanding Java Operators 52

Working with Binary Arithmetic Operators 53

Arithmetic Operators 53

Numeric Promotion 55

Working with Unary Operators 57

Logical Complement and Negation Operators 57

Increment and Decrement Operators 58

Using Additional Binary Operators 60

Assignment Operators 60

Compound Assignment Operators 62

Relational Operators 63

Logical Operators 64

Equality Operators 65

Understanding Java Statements 66

The if-then Statement 67

The if-then-else Statement 68

The switch Statement 72

The while Statement 76

The do-while Statement 78

The for Statement 80

Understanding Advanced Flow Control 86

Nested Loops 87

Adding Optional Labels 87

The break Statement 88

The continue Statement 90

Summary 92

Exam Essentials 92

Review Questions 94

Chapter 3 Core Java APIs 101

Creating and Manipulating Strings 102

Concatenation 102

Immutability 104

The String Pool 105

Important String Methods 105

Method Chaining 110

Using the StringBuilder Class 111

Mutability and Chaining 112

Creating a StringBuilder 113

Important StringBuilder Methods 114
StringBuilder vs. StringBuffer 117

Understanding Equality 117

Understanding Java Arrays 119

Creating an Array of Primitives 119

Creating an Array with Reference Variables 121

Using an Array 123

Sorting 124

Searching 125

Varargs 126

Multidimensional Arrays 126

Understanding an ArrayList 129

Creating an ArrayList 129

Using an ArrayList 130

Wrapper Classes 134

Autoboxing 136

Converting Between array and List 136

Sorting 138

Working with Dates and Times 138

Creating Dates and Times 138

Manipulating Dates and Times 142

Working with Periods 145

Formatting Dates and Times 148

Parsing Dates and Times 151

Summary 151

Exam Essentials 152

Review Questions 153

Chapter 4 Methods and Encapsulation 165

Designing Methods 166

Optional Specifiers 168

Return Type 169 ...