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Name: OCP | Oracle Certified Professional Java SE 8 Programmer II Study Guide: Exam 1Z0-809
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Oracle Certified Professional Java SE 8 Programmer II Study Guide: Exam 1Z0-809

Jeanne Boyarsky Scott Selikoff(Autor*in)

Sybex (Verlag)

Erschienen am 1. Dezember 2015

720 Seiten

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978-1-119-06788-7 (ISBN)

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Inhalt

Cover
Title Page
Copyright
Acknowledgments
About the Authors
Contents at a Glance
Contents
Introduction
Assessment Test
Answers to Assessment Test
Chapter 1 Advanced Class Design
Reviewing OCA Concepts
Access Modifiers
Overloading and Overriding
Abstract Classes
Static and Final
Imports
Using instanceof
Understanding Virtual Method Invocation
Annotating Overridden Methods
Coding equals, hashCode, and toString
toString
equals
hashCode
Working with Enums
Using Enums in Switch Statements
Adding Constructors, Fields, and Methods
Creating Nested Classes
Member Inner Classes
Local Inner Classes
Anonymous Inner Classes
Static Nested Classes
Summary
Exam Essentials
Review Questions
Chapter 2 Design Patterns and Principles
Designing an Interface
Purpose of an Interface
Introducing Functional Programming
Defining a Functional Interface
Implementing Functional Interfaces with Lambdas
Applying the Predicate Interface
Implementing Polymorphism
Distinguishing between an Object and a Reference
Casting Object References
Understanding Design Principles
Encapsulating Data
Creating JavaBeans
Applying the Is-a Relationship
Applying the Has-a Relationship
Composing Objects
Working with Design Patterns
Applying the Singleton Pattern
Creating Immutable Objects
Using the Builder Pattern
Creating Objects with the Factory Pattern
Summary
Exam Essentials
Review Questions
Chapter 3 Generics and Collections
Reviewing OCA Collections
Array and ArrayList
Searching and Sorting
Wrapper Classes and Autoboxing
The Diamond Operator
Working with Generics
Generic Classes
Generic Interfaces
Generic Methods
Interacting with Legacy Code
Bounds
Putting It All Together
Using Lists, Sets, Maps, and Queues
Common Collections Methods
Using the List Interface
Using the Set Interface
Using the Queue Interface
Map
Comparing Collection Types
Comparator vs. Comparable
Comparable
Comparator
Searching and Sorting
Additions in Java 8
Using Method References
Removing Conditionally
Updating All Elements
Looping through a Collection
Using New Java 8 Map APIs
Summary
Exam Essentials
Review Questions
Chapter 4 Functional Programming
Using Variables in Lambdas
Working with Built-In Functional Interfaces
Implementing Supplier
Implementing Consumer and BiConsumer
Implementing Predicate and BiPredicate
Implementing Function and BiFunction
Implementing UnaryOperator and BinaryOperator
Checking Functional Interfaces
Returning an Optional
Using Streams
Creating Stream Sources
Using Common Terminal Operations
Using Common Intermediate Operations
Putting Together the Pipeline
Printing a Stream
Working with Primitives
Creating Primitive Streams
Using Optional with Primitive Streams
Summarizing Statistics
Learning the Functional Interfaces for Primitives
Working with Advanced Stream Pipeline Concepts
Linking Streams to the Underlying Data
Chaining Optionals
Collecting Results
Summary
Exam Essentials
Review Questions
Chapter 5 Dates, Strings, and Localization
Working with Dates and Times
Creating Dates and Times
Manipulating Dates and Times
Working with Periods
Working with Durations
Accounting for Daylight Savings Time
Reviewing the String class
Adding Internationalization and Localization
Picking a Locale
Using a Resource Bundle
Formatting Numbers
Formatting Dates and Times
Summary
Exam Essentials
Review Questions
Chapter 6 Exceptions and Assertions
Reviewing Exceptions
Exceptions Terminology
Categories of Exceptions
Exceptions on the OCP
Try Statement
Throw vs. Throws
Creating Custom Exceptions
Using Multi-catch
Using Try-With-Resources
Try-With-Resources Basics
AutoCloseable
Suppressed Exceptions
Putting It Together
Rethrowing Exceptions
Working with Assertions
The assert Statement
Enabling Assertions
Using Assertions
Summary
Exam Essentials
Review Questions
Chapter 7 Concurrency
Introducing Threads
Distinguishing Thread Types
Understanding Thread Concurrency
Introducing Runnable
Creating a Thread
Polling with Sleep
Creating Threads with the ExecutorService
Introducing the Single-Thread Executor
Shutting Down a Thread Executor
Submitting Tasks
Waiting for Results
Scheduling Tasks
Increasing Concurrency with Pools
Synchronizing Data Access
Protecting Data with Atomic Classes
Improving Access with Synchronized Blocks
Synchronizing Methods
Understanding the Cost of Synchronization
Using Concurrent Collections
Introducing Concurrent Collections
Understanding Memory Consistency Errors
Working with Concurrent Classes
Obtaining Synchronized Collections
Working with Parallel Streams
Creating Parallel Streams
Processing Tasks in Parallel
Processing Parallel Reductions
Managing Concurrent Processes
Creating a CyclicBarrier
Applying the Fork/Join Framework
Identifying Threading Problems
Understanding Liveness
Managing Race Conditions
Summary
Exam Essentials
Review Questions
Chapter 8 IO
Understanding Files and Directories
Conceptualizing the File System
Introducing the File Class
Introducing Streams
Stream Fundamentals
Stream Nomenclature
Common Stream Operations
Working with Streams
The FileInputStream and FileOutputStream Classes
The FileReader and FileWriter classes
The ObjectInputStream and ObjectOutputStream Classes
The PrintStream and PrintWriter Classes
Review of Stream Classes
Interacting with Users
The Old Way
The New Way
Summary
Exam Essentials
Review Questions
Chapter 9 NIO.2
Introducing NIO.2
Introducing Path
Creating Paths
Interacting with Paths and Files
Providing Optional Arguments
Using Path Objects
Interacting with Files
Understanding File Attributes
Discovering Basic File Attributes
Improving Access with Views
Presenting the New Stream Methods
Conceptualizing Directory Walking
Walking a Directory
Searching a Directory
Listing Directory Contents
Printing File Contents
Comparing Legacy File and NIO.2 Methods
Summary
Exam Essentials
Review Questions
Chapter 10 JDBC
Introducing Relational Databases and SQL
Identifying the Structure of a Relational Database
Writing Basic SQL Statements
Introducing the Interfaces of JDBC
Connecting to a Database
Building a JDBC URL
Getting a Database Connection
Obtaining a Statement
Choosing a ResultSet Type
Choosing a ResultSet Concurrency Mode
Executing a Statement
Getting Data from a ResultSet
Reading a ResultSet
Getting Data for a Column
Scrolling ResultSet
Closing Database Resources
Dealing with Exceptions
Summary
Exam Essentials
Review Questions
Appendix A Answers to Review Questions
Chapter 1: Advanced Class Design
Chapter 2: Design Patterns and Principles
Chapter 3: Generics and Collections
Chapter 4: Functional Programming
Chapter 5: Dates, Strings, and Localization
Chapter 6: Exceptions and Assertions
Chapter 7: Concurrency
Chapter 8: IO
Chapter 9: NIO.2
Chapter 10: JDBC
Appendix B Study Tips
Studying for the Test
Creating a Study Plan
Comparing Previous Exams
Creating and Running Sample Applications
Taking the Test
Understanding the Question
Taking Advantage of the Exam Software
Using the Provided Writing Material
Choosing the Best Answer
Optimizing Your Time
Getting a Good Night's Rest
Appendix C Upgrading from Java 6 or Earlier
Enhancing the Java Language
Using the Diamond Operator
Creating Literals
Making Decisions with Switch
Formatting and Parsing
Using DecimalFormat Flags
Using DateFormat
Formatting
Parsing
Custom Date Formats
Applying Locks
Understanding the Lock Framework
Using a ReentrantLock
Understanding Read/Write Locks
Using a ReentrantReadWriteLock
Working with Directories
Traversing Directories
Monitoring a Directory for Changes
Summary
Exam Essentials
Review Questions
Answers to Practice Test
Index
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