book

OCA Java SE 8 Programmer I Exam Guide (Exams 1Z0-808)

Name: OCA Java SE 8 Programmer I Exam Guide (Exams 1Z0-808)
ISBN: 9781260011388

by Kathy Sierra, Bert Bates

May 2017

Intermediate to advanced

432 pages

10h 50m

English

McGraw-Hill

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Cover Page
Title Page
Copyright Page
Contents
Acknowledgments
Preface
Introduction
1 Declarations and Access Control
Java RefresherFeatures and Benefits of Java (OCA Objective 1.5)Identifiers and Keywords (OCA Objectives 1.2 and 2.1)Legal IdentifiersOracle’s Java Code ConventionsDefine Classes (OCA Objectives 1.2, 1.3, 1.4, 6.4, and 7.5)Source File Declaration RulesUsing the javac and java CommandsUsing public static void main(String[ ] args)Import Statements and the Java APIStatic Import StatementsClass Declarations and ModifiersExercise 1-1: Creating an Abstract Superclass and Concrete SubclassUse Interfaces (OCA Objective 7.5)Declaring an InterfaceDeclaring Interface ConstantsDeclaring default Interface MethodsDeclaring static Interface MethodsDeclare Class Members (OCA Objectives 2.1, 2.2, 2.3, 4.1, 4.2, 6.2, 6.3, and 6.4)Access ModifiersNonaccess Member ModifiersConstructor DeclarationsVariable DeclarationsDeclare and Use enums (OCA Objective 1.2)Declaring enumsCertification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers
2 Object Orientation
Encapsulation (OCA Objectives 6.1 and 6.5)Inheritance and Polymorphism (OCA Objectives 7.1 and 7.2)The Evolution of InheritanceIS-A and HAS-A RelationshipsPolymorphism (OCA Objective 7.2)Overriding/Overloading (OCA Objectives 6.1 and 7.2)Overridden MethodsOverloaded MethodsCasting (OCA Objectives 2.2 and 7.3)Implementing an Interface (OCA Objective 7.5)Java 8—Now with Multiple Inheritance!Legal Return Types (OCA Objectives 2.2 and 6.1)Return Type DeclarationsReturning a ValueConstructors and Instantiation (OCA Objectives 6.3 and 7.4)Constructor BasicsConstructor ChainingRules for ConstructorsDetermine Whether a Default Constructor Will Be CreatedOverloaded ConstructorsInitialization Blocks (OCA Objectives 1.2 and 6.3-ish)Statics (OCA Objective 6.2)Static Variables and MethodsCertification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers
3 Assignments
Stack and Heap—Quick ReviewLiterals, Assignments, and Variables (OCA Objectives 2.1, 2.2, and 2.3)Literal Values for All Primitive TypesAssignment OperatorsExercise 3-1: Casting PrimitivesScope (OCA Objective 1.1)Variable ScopeVariable Initialization (OCA Objectives 2.1, 4.1, and 4.2)Using a Variable or Array Element That Is Uninitialized and UnassignedLocal (Stack, Automatic) Primitives and ObjectsPassing Variables into Methods (OCA Objective 6.6)Passing Object Reference VariablesDoes Java Use Pass-By-Value Semantics?Passing Primitive VariablesGarbage Collection (OCA Objective 2.4)Overview of Memory Management and Garbage CollectionOverview of Java’s Garbage CollectorWriting Code That Explicitly Makes Objects Eligible for CollectionExercise 3-2: Garbage Collection ExperimentCertification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers

4 Operators
Java Operators (OCA Objectives 3.1, 3.2, and 3.3)Assignment OperatorsRelational Operatorsinstanceof ComparisonArithmetic OperatorsConditional OperatorLogical OperatorsOperator PrecedenceCertification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers
5 Flow Control and Exceptions
Using if and switch Statements (OCA Objectives 3.3 and 3.4)if-else Branchingswitch StatementsExercise 5-1: Creating a switch-case StatementCreating Loops Constructs (OCA Objectives 5.1, 5.2, 5.3, 5.4, and 5.5)Using while LoopsUsing do LoopsUsing for LoopsUsing break and continueUnlabeled StatementsLabeled StatementsExercise 5-2: Creating a Labeled while LoopHandling Exceptions (OCA Objectives 8.1, 8.2, 8.3, 8.4, and 8.5)Catching an Exception Using try and catchUsing finallyPropagating Uncaught ExceptionsExercise 5-3: Propagating and Catching an ExceptionDefining ExceptionsException HierarchyHandling an Entire Class Hierarchy of ExceptionsException MatchingException Declaration and the Public InterfaceExercise 5-4: Creating an ExceptionRethrowing the Same ExceptionCommon Exceptions and Errors (OCA Objective 8.5)Where Exceptions Come FromJVM-Thrown ExceptionsProgrammatically Thrown ExceptionsA Summary of the Exam’s Exceptions and ErrorsCertification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers
6 Strings, Arrays, ArrayLists, Dates, and Lambdas
Using String and StringBuilder (OCA Objectives 9.2 and 9.1)The String ClassImportant Facts About Strings and MemoryImportant Methods in the String ClassThe StringBuilder ClassImportant Methods in the StringBuilder ClassWorking with Calendar Data (OCA Objective 9.3)ImmutabilityFactory ClassesUsing and Manipulating Dates and TimesFormatting Dates and TimesUsing Arrays (OCA Objectives 4.1 and 4.2)Declaring an ArrayConstructing an ArrayInitializing an ArrayUsing ArrayLists and Wrappers (OCA Objectives 9.4 and 2.5)When to Use ArrayListsArrayList Methods in ActionImportant Methods in the ArrayList ClassAutoboxing with ArrayListsThe Java 7 “Diamond” SyntaxAdvanced Encapsulation (OCA Objective 6.5)Encapsulation for Reference VariablesUsing Simple Lambdas (OCA Objective 9.5)Certification SummaryTwo-Minute DrillQ&A Self TestSelf Test Answers
A About the Download
System RequirementsDownloading from McGraw-Hill Professional’s Media CenterInstalling the Practice Exam SoftwareRunning the Practice Exam SoftwarePractice Exam Software FeaturesRemoving InstallationHelpTechnical SupportWindows 8 TroubleshootingMcGraw-Hill Education Content Support
Index

Overview

Up-to-date coverage of every topic on the Java 8 SE Programmer I exam

Prepare for the OCA Java SE 8 Programmer I exam using this effective self-study system from Oracle Press. Written by developers of the original Sun Certified Java Programmer exam, OCA Java SE 8 Programmer I Exam Guide (Exam 1Z0-808) includes two complete, accurate practice exams. In all, you will get more than 200 practice questions that mirror those on the actual test in content, tone, and format. Beyond fully preparing you for the challenging exam, the book also serves as an ideal on-the-job reference.

Clearly explains every topic on Exam IZ0-808, including:
• Declarations
• Access control
• Object orientation
• Assignments
• Operators
• Flow control
• Exceptions
• Strings
• Arrays
• ArrayLists

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OCA Java SE 8 Programmer I Certification Guide

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