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

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Jeanne Boyarsky (CodeRanch), Scott Selikoff (Selikoff Solutions, LLC)

Formaat: EPUB+DRM
Ilmumisaeg: 04-Dec-2015
Kirjastus: Sybex Inc.,U.S.
Keel: eng
ISBN-13: 9781119067894

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Formaat: EPUB+DRM
Ilmumisaeg: 04-Dec-2015
Kirjastus: Sybex Inc.,U.S.
Keel: eng
ISBN-13: 9781119067894

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Complete, trusted preparation for the Java Programmer II exam OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your comprehensive companion for preparing for Exam 1Z0-809 as well as upgrade Exam 1Z0-810 and Exam 1Z0-813. With full coverage of 100% of exam objectives, this invaluable guide reinforces what you know, teaches you what you don't know, and gives you the hands-on practice you need to boost your skills. Written by expert Java developers, this book goes beyond mere exam prep with the insight, explanations and perspectives that come from years of experience. You'll review the basics of object-oriented programming, understand functional programming, apply your knowledge to database work, and much more. From the basic to the advanced, this guide walks you through everything you need to know to confidently take the OCP 1Z0-809 Exam and upgrade exams 1Z0-810 and 1Z0-813.

Java 8 represents the biggest changes to the language to date, and the latest exam now requires that you demonstrate functional programming competence in order to pass. This guide has you covered, with clear explanations and expert advice.

Understand abstract classes, interfaces, and class design Learn object-oriented design principles and patterns Delve into functional programming, advanced strings, and localization Master IO, NIO, and JDBC with expert-led database practice

If you're ready to take the next step in your IT career, OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your ideal companion on the road to certification.

Introduction

xix

Assessment Test

xxxviii

Chapter 1 Advanced Class Design

(46)

Reviewing OCA Concepts

(5)

Access Modifiers

(2)

Overloading and Overriding

(1)

Abstract Classes

(1)

Static and Final

(1)

Imports

(1)

Using instanceof

(2)

Understanding Virtual Method Invocation

(2)

Annotating Overridden Methods

(2)

Coding equals, hash Code, and toString

(7)

toString

(2)

equals

(3)

hashCode

(2)

Working with Enums

(4)

Using Enums in Switch Statements

(1)

Adding Constructors, Fields, and Methods

(2)

Creating Nested Classes

(9)

Member Inner Classes

(2)

Local Inner Classes

(2)

Anonymous Inner Classes

(2)

Static Nested Classes

(2)

Summary

(1)

Exam Essentials

(2)

Review Questions

(11)

Chapter 2 Design Patterns and Principles

(56)

Designing an Interface

(4)

Purpose of an Interface

(1)

Introducing Functional Programming

(9)

Defining a Functional Interface

(2)

Implementing Functional Interfaces with Lambdas

(5)

Applying the Predicate Interface

(1)

Implementing Polymorphism

(5)

Distinguishing between an Object and a Reference

(1)

Casting Object References

(2)

Understanding Design Principles

(9)

Encapsulating Data

(3)

Creating JavaBeans

(2)

Applying the Is-a Relationship

(2)

Applying the Has-a Relationship

(1)

Composing Objects

(1)

Working with Design Patterns

(18)

Applying the Singleton Pattern

(6)

Creating Immutable Objects

(4)

Using the Builder Pattern

(3)

Creating Objects with the Factory Pattern

(4)

Summary

(1)

Exam Essentials

(2)

Review Questions

(8)

Chapter 3 Generics and Collections

103

(68)

Reviewing OCA Collections

104

(4)

Array and ArrayList

104

(1)

Searching and Sorting

105

(1)

Wrapper Classes and Autoboxing

106

(1)

The Diamond Operator

107

(1)

Working with Generics

108

(16)

Generic Classes

109

(3)

Generic Interfaces

112

(2)

Generic Methods

114

(1)

Interacting with Legacy Code

114

(3)

Bounds

117

(5)

Putting It All Together

122

(2)

Using Lists, Sets, Maps, and Queues

124

(19)

Common Collections Methods

125

(2)

Using the List Interface

127

(5)

Using the Set Interface

132

(2)

Using the Queue Interface

134

(4)

Map

138

(2)

Comparing Collection Types

140

(3)

Comparator vs. Comparable

143

(7)

Comparable

143

(3)

Comparator

146

(4)

Searching and Sorting

150

(2)

Additions in Java 8

152

(7)

Using Method References

152

(2)

Removing Conditionally

154

(1)

Updating All Elements

155

(1)

Looping through a Collection

155

(1)

Using New Java 8 Map APIs

155

(4)

Summary

159

(2)

Exam Essentials

161

(1)

Review Questions

162

(9)

Chapter 4 Functional Programming

171

(62)

Using Variables in Lambdas

172

(1)

Working with Built-In Functional Interfaces

173

(9)

Implementing Supplier

174

(1)

Implementing Consumer and BiConsumer

175

(2)

Implementing Predicate and BiPredicate

177

(1)

Implementing Function and BiFunction

178

(2)

Implementing UnaryOperator and BinaryOperator

180

(1)

Checking Functional Interfaces

181

(1)

Returning an Optional

182

(3)

Using Streams

185

(20)

Creating Stream Sources

188

(1)

Using Common Terminal Operations

189

(7)

Using Common Intermediate Operations

196

(4)

Putting Together the Pipeline

200

(4)

Printing a Stream

204

(1)

Working with Primitives

205

(8)

Creating Primitive Streams

205

(3)

Using Optional with Primitive Streams

208

(2)

Summarizing Statistics

210

(1)

Learning the Functional Interfaces for Primitives

210

(3)

Working with Advanced Stream Pipeline Concepts

213

(10)

Linking Streams to the Underlying Data

213

(1)

Chaining Optionals

214

(3)

Collecting Results

217

(6)

Summary

223

(1)

Exam Essentials

224

(2)

Review Questions

226

(7)

Chapter 5 Dates, Strings, and Localization

233

(50)

Working with Dates and Times

234

(19)

Creating Dates and Times

235

(6)

Manipulating Dates and Times

241

(3)

Working with Periods

244

(3)

Working with Durations

247

(4)

Accounting for Daylight Savings Time

251

(2)

Reviewing the String class

253

(2)

Adding Internationalization and Localization

255

(18)

Picking a Locale

256

(2)

Using a Resource Bundle

258

(9)

Formatting Numbers

267

(3)

Formatting Dates and Times

270

(3)

Summary

273

(1)

Exam Essentials

274

(2)

Review Questions

276

(7)

Chapter 6 Exceptions and Assertions

283

(42)

Reviewing Exceptions

284

(5)

Exceptions Terminology

284

(1)

Categories of Exceptions

285

(1)

Exceptions on the OCP

286

(2)

Try Statement

288

(1)

Throw vs. Throws

289

(1)

Creating Custom Exceptions

289

(2)

Using Multi-catch

291

(5)

Using Try-With-Resources

296

(9)

Try-With-Resources Basics

298

(2)

AutoCloseable

300

(2)

Suppressed Exceptions

302

(3)

Putting It Together

305

(1)

Rethrowing Exceptions

305

(3)

Working with Assertions

308

(6)

The assert Statement

308

(1)

Enabling Assertions

309

(1)

Using Assertions

310

(4)

Summary

314

(1)

Exam Essentials

315

(1)

Review Questions

316

(9)

Chapter 7 Concurrency

325

(80)

Introducing Threads

327

(8)

Distinguishing Thread Types

328

(1)

Understanding Thread Concurrency

328

(2)

Introducing Runnable

330

(1)

Creating a Thread

331

(3)

Polling with Sleep

334

(1)

Creating Threads with the ExecutorService

335

(15)

Introducing the Single-Thread Executor

335

(2)

Shutting Down a Thread Executor

337

(1)

Submitting Tasks

338

(2)

Waiting for Results

340

(5)

Scheduling Tasks

345

(3)

Increasing Concurrency with Pools

348

(2)

Synchronizing Data Access

350

(8)

Protecting Data with Atomic Classes

352

(2)

Improving Access with Synchronized Blocks

354

(2)

Synchronizing Methods

356

(1)

Understanding the Cost of Synchronization

357

(1)

Using Concurrent Collections

358

(8)

Introducing Concurrent Collections

358

(1)

Understanding Memory Consistency Errors

359

(1)

Working with Concurrent Classes

360

(5)

Obtaining Synchronized Collections

365

(1)

Working with Parallel Streams

366

(11)

Creating Parallel Streams

366

(1)

Processing Tasks in Parallel

367

(5)

Processing Parallel Reductions

372

(5)

Managing Concurrent Processes

377

(10)

Creating a CyclicBarrier

377

(4)

Applying the Fork/Join Framework

381

(6)

Identifying Threading Problems

387

(5)

Understanding Liveness

387

(4)

Managing Race Conditions

391

(1)

Summary

392

(1)

Exam Essentials

393

(1)

Review Questions

394

(11)

Chapter 8 IO

405

(48)

Understanding Files and Directories

406

(5)

Conceptualizing the File System

406

(1)

Introducing the File Class

407

(4)

Introducing Streams

411

(9)

Stream Fundamentals

411

(1)

Stream Nomenclature

412

(6)

Common Stream Operations

418

(2)

Working with Streams

420

(17)

The FilelnputStream and FileOutputStream Classes

420

(4)

The FileReader and FileWriter classes

424

(2)

The ObjectlnputStream and ObjectOutputStream Classes

426

(6)

The PrintStream and PrintWriter Classes

432

(3)

Review of Stream Classes

435

(2)

Interacting with Users

437

(5)

The Old Way

437

(1)

The New Way

438

(4)

Summary

442

(1)

Exam Essentials

443

(2)

Review Questions

445

(8)

Chapter 9 NIO.2

453

(52)

Introducing NIO.2

454

(6)

Introducing Path

455

(1)

Creating Paths

456

(4)

Interacting with Paths and Files

460

(18)

Providing Optional Arguments

461

(1)

Using Path Objects

462

(9)

Interacting with Files

471

(7)

Understanding File Attributes

478

(9)

Discovering Basic File Attributes

478

(5)

Improving Access with Views

483

(4)

Presenting the New Stream Methods

487

(7)

Conceptualizing Directory Walking

487

(1)

Walking a Directory

488

(2)

Searching a Directory

490

(1)

Listing Directory Contents

491

(1)

Printing File Contents

492

(2)

Comparing Legacy File and NIO.2 Methods

494

(1)

Summary

495

(1)

Exam Essentials

495

(2)

Review Questions

497

(8)

Chapter 10 JDBC

505

(42)

Introducing Relational Databases and SQL

507

(4)

Identifying the Structure of a Relational Database

508

(2)

Writing Basic SQL Statements

510

(1)

Introducing the Interfaces of JDBC

511

(2)

Connecting to a Database

513

(5)

Building a JDBC URL

513

(2)

Getting a Database Connection

515

(3)

Obtaining a Statement

518

(2)

Choosing a ResultSet Type

519

(1)

Choosing a ResultSet Concurrency Mode

520

(1)

Executing a Statement

520

(4)

Getting Data from a ResultSet

524

(9)

Reading a ResultSet

524

(2)

Getting Data for a Column

526

(3)

Scrolling ResultSet

529

(4)

Closing Database Resources

533

(2)

Dealing with Exceptions

535

(1)

Summary

536

(1)

Exam Essentials

537

(2)

Review Questions

539

(8)

Appendix A Answers to Review Questions

547

(28)

Chapter 1: Advanced Class Design

548

(2)

Chapter 2: Design Patterns and Principles

550

(3)

Chapter 3: Generics and Collections

553

(3)

Chapter 4: Functional Programming

556

(2)

Chapter 5: Dates, Strings, and Localization

558

(2)

Chapter 6: Exceptions and Assertions

560

(1)

Chapter 7: Concurrency

561

(4)

Chapter 8: I0

565

(3)

Chapter 9: NIO.2

568

(3)

Chapter 10: JDBC

571

(4)

Appendix B Study Tips

575

(20)

Studying for the Test

576

(6)

Creating a Study Plan

576

(2)

Comparing Previous Exams

578

(1)

Creating and Running Sample Applications

579

(3)

Taking the Test

582

(13)

Understanding the Question

582

(5)

Taking Advantage of the Exam Software

587

(1)

Using the Provided Writing Material

587

(3)

Choosing the Best Answer

590

(1)

Optimizing Your Time

591

(2)

Getting a Good Night's Rest

593

(2)

Appendix C Upgrading from Java 6 or Earlier

595

(54)

Enhancing the Java Language

596

(7)

Using the Diamond Operator

596

(1)

Creating Literals

597

(1)

Making Decisions with Switch

598

(5)

Formatting and Parsing

603

(4)

Using DecimalFormat Flags

603

(1)

Using DateFormat

603

(1)

Formatting

604

(1)

Parsing

605

(1)

Custom Date Formats

606

(1)

Applying Locks

607

(10)

Understanding the Lock Framework

607

(3)

Using a ReentrantLock

610

(4)

Understanding Read/Write Locks

614

(1)

Using a ReentrantReadWriteLock

615

(2)

Working with Directories

617

(16)

Traversing Directories

618

(7)

Monitoring a Directory for Changes

625

(8)

Summary

633

(1)

Exam Essentials

633

(2)

Review Questions

635

(10)

Answers to Practice Test

645

(4)

Index

649

Jeanne Boyarsky, OCA/OCP 8, has worked as a Java developer for a bank in NYC for 13 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, OCA/OCP 8, 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.

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