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OCA Java SE 7 Programmer I Study Guide (Exam 1Z0-803), 2nd Edition

by Robert Liguori, Edward Finegan

September 2012

Intermediate to advanced

576 pages

11h 36m

English

McGraw Hill Computing

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Cover
Copyright
Dedication
About the Authors
Contents at a Glance
Contents
Acknowledgments
Preface
Introduction
1 Packaging, Compiling, and Interpreting Java Code
Understand PackagesPackage Designpackage and import StatementsExercise 1-1: Replacing Implicit import Statements with Explicit import StatementsUnderstand Package-Derived ClassesJava Utilities APIJava Basic Input/Output APIThe Java Networking APIJava Abstract Window Toolkit APIJava Swing APIExercise I -2: Understanding Extended Functionality of the Java Utilities APIUnderstand Class StructureNaming ConventionsSeparators and Other Java Source SymbolsJava Class StructureCompile and Interpret Java CodeJava CompilerJava InterpreterExercise 1-3: Compiling and Interpreting Packaged SoftwareTwo-Minute DrillQ&A Self TestSelf Test Answers

2 Programming with Java Statements
Understand Assignment StatementsThe Assignment Expression StatementCreate and Use Conditional StatementsThe if Conditional StatementThe if-then Conditional StatementThe if-then-else Conditional StatementThe switch Conditional StatementExercise 2-1: Evaluating the String Class in the switch StatementCreate and Use Iteration StatementsThe for Loop Iteration StatementThe Enhanced for Loop Iteration StatementExercise 2-2: Iterating Through an ArrayList While Applying ConditionsThe while Iteration StatementThe do-while Iteration StatementExercise 2-3: Performing Code RefactoringExercise 2-4: Knowing Your Statement-Related KeywordsCreate and Use Transfer of Control StatementsThe break Transfer of Control StatementThe continue Transfer of Control StatementThe return Transfer of Control StatementThe labeled StatementTwo-Minute DrillQ&A Self TestSelf Test Answers
3 Programming with Java Operators and Strings
Understand Fundamental OperatorsAssignment OperatorsExercise 3-1: Using Compound Assignment OperatorsArithmetic OperatorsRelational OperatorsLogical OperatorsUnderstand Operator PrecedenceOperator PrecedenceOverriding Operator PrecedenceUse String Objects and Their MethodsStringsThe String Concatenation OperatorExercise 3-2: Uncovering Bugs that Your Compiler May Not FindMethods of the String ClassUse StringBuilder Objects and Their MethodsMethods of the StringBuilder ClassExercise 3-3: Using Constructors of the StringBuilder ClassTest Equality Between Strings and other Objects equals Method of the String ClassExercise 3-4: Working with the compare To Method of the String ClassTwo-Minute DrillQ&A Self TestSelf Test Answers
4 Working with Basic Classes and Variables
Understand Primitives, Enumerations, and ObjectsPrimitive VariablesObjectsExercise 4-1: Compile and Run an ObjectArraysEnumerationsJava Is Strongly TypedNaming ConventionsUse Primitives, Enumerations, and ObjectsLiteralsExamples of Primitives, Enumerations, and ObjectsExercise 4-2: Creating Getters and Setters.Two-Minute DrillQ&A Self TestSelf Test Answers
5 Understanding Methods and Variable Scope
Create and Use MethodsUsing Method SyntaxMaking and Calling a MethodOverloading a MethodPass Objects by Reference and ValuePassing Primitives by Value to MethodsPassing Objects by Reference to MethodsUnderstand Variable ScopeLocal VariablesMethod ParametersInstance VariablesAn Object’s LifecycleCreate and Use ConstructorsMaking a ConstructorOverloading a ConstructorUsing the Default ConstructorUse this and super KeywordsThe this KeywordThe super KeywordCreate Static Methods and Instance VariablesStatic MethodsStatic VariablesConstantsTwo-Minute DrillQ&A Self TestSelf Test Answers
6 Programming with Arrays
Work with Java ArraysOne-Dimensional ArraysMulti-Dimensional ArraysWork with ArrayList Objects and Their MethodsUsing the ArrayList ClassArrayList vs. Standard ArraysExercise 6-1: Implement an ArrayList and Standard ArrayTwo-Minute DrillQ&A Self TestSelf Test Answers
7 Understanding Class Inheritance
Implement and Use Inheritance and Class TypesInheritanceOverriding MethodsAbstract ClassesInterfacesAdvanced Concepts of InheritanceUnderstand Encapsulation PrinciplesGood Design with EncapsulationAccess ModifiersSetters and GettersAdvanced Use of Classes with Inheritance and EncapsulationJava Access Modifiers ExampleInheritance with Concrete Classes ExamplesInheritance with Abstract Classes ExamplesExercise 7-1: Add Functionality to the Plant SimulatorInterface ExampleTwo-Minute DrillQ&A Self TestSelf Test Answers
8 Understanding Polymorphism and Casts
Understand PolymorphismConcepts of PolymorphismPractical Examples of PolymorphismExercise 8-1: Add Functionality to the Describable ExampleUnderstand CastingWhen Casting Is NeededTwo-Minute DrillQ&A Self TestSelf Test Answers
9 Handling Exceptions
Understand the Rationale and Types of ExceptionsException Hierarchy in JavaChecked ExceptionsUnchecked Exceptions(Unchecked) ErrorsExercise 9-1: Determining When to Use Assertions in Place of ExceptionsExercise 9-2: Analyzing the Source Code of Java ExceptionsUnderstand the Nature of ExceptionsDefining ExceptionsThrowing ExceptionsPropagating ExceptionsExercise 9-3: Creating a Custom Exception ClassAlter the Program FlowThe try-catch StatementThe try-finally StatementThe try-catch-finally StatementThe try-with-resources StatementThe multi-catch ClauseExercise 9-4: Using NetBeans Code Templates for Exception Handling ElementsRecognize Common ExceptionsCommon Checked ExceptionsCommon Unchecked ExceptionsCommon ErrorsExercise 9-5: Creating an Error ConditionTwo-Minute DrillQ&A Self TestSelf Test Answers
10 Working with Classes and Their Relationships
Understand Class Compositions and AssociationsClass Compositions and AssociationsClass RelationshipsMultiplicitiesAssociation NavigationClass Compositions and Associations in PracticeExamples of Class Association RelationshipsExamples of Class Composition RelationshipsExamples of Association NavigationTwo-Minute DrillQ&A Self TestSelf Test Answers
A Java Platforms
Java Platform, Standard EditionThe Java SE APIThe Java Runtime EnvironmentThe Java Development KitSupported Operating SystemsJava 2 Platform, Micro EditionConfigurationsProfilesOptional PackagesSquawkJava Platform, Enterprise Edition
B Java SE 7 Packages
Core PackagesIntegration PackagesUser Interface PackagesSecurity PackagesXML-based Packages
C Java Keywords
D Bracket Conventions
Java Bracket ConventionsMiscellaneous Bracket Conventions
E Unicode Standard
F Pseudo-code Algorithms
Implementing Statement-Related Algorithms from Pseudo-codePseudo-code AlgorithmsPseudo-code Algorithms and Java
G Unified Modeling Language
Recognizing Representations of Significant UML ElementsClasses, Abstract Classes, and Interface DiagramsAttributes and OperationsVisibility ModifiersRecognizing Representations of UML AssociationsGraphic PathsRelationship Specifiers
H Practice Exam
MasterExam Answers
I About the Download
Steps to Download MasterExamSystem RequirementsMasterExamEnterprise Architect Project FileHelpRemoving InstallationTechnical SupportLearnKey Technical Support
Glossary
Index

Content preview from OCA Java SE 7 Programmer I Study Guide (Exam 1Z0-803), 2nd Edition

Understanding Polymorphism and Casts

CERTIFICATION OBJECTIVES

• Understand Polymorphism

• Understand Casting

Two-Minute Drill

Q&A Self Test

The OCA exam will expect you to have a firm understanding of what polymorphism is and when it should be used. The exam will present scenarios using polymorphism in correct and incorrect ways.

Casting will also be covered on the OCA exam. On the surface, casting looks similar to polymorphism; however, it is very different. The OCA exam is likely to ask questions that require that you have a solid ...

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OCA/OCP Java SE 7 Programmer I & II Study Guide (Exams 1Z0-803 & 1Z0-804)

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OCA Java SE 7 Programmer I Study Guide (Exam 1Z0-803), 2nd Edition

by Robert Liguori, Edward Finegan

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.