Java2学习指南（英文版）（附CD-ROM光盘一张） mobi 下载 网盘 caj lrf pdf txt 阿里云

本书以Java 2的SCJP和SCJD认证考试为目标，内容涵盖了SCJP和SCJD核心考试的所有考试要点，尽可能详细地介绍了参加SCJP和SCJD的应试者以及其他高级用户所应该掌握的所有技能。

本书在介绍考试要点时针对每个考试目标，使用了大量的插图、表格、试验、测试等，使读者在牢固掌握知识点的同时，轻松地获得丰富的实践经验。

本书由具有丰富SCJP和SCJD考试经验的专家编写，是参加SCJP和SCJD的考试人员的考试教材。本书也是一本学习使用Java 2的很好的参考书，还可以作为一些疑难问题的速查手册。

Part I　The Programmer's Exam　1

1　Language Fundamentals　3

* Java Programming Language Keywords (Exam Objective 4.4)　4

·Access Modifiers　5

·Class, Method, and Variable Modifiers　5

·Flow Control　6

·Error Handling　7

·Package Control　7

·Primitives　7

·Variable Keywords　8

·Void Return Type Keyword　8

·Unused Reserved Words　8

* Li***ls and Ranges of All Primitive Data Types (Exam Objective 4.6)　10

·Range of Primitive Types　11

·Li***l Values for All Primitive Types　12

·Li***l Values for Strings　16

* Array Declaration, C***truction, and Initialization (Exam Objective 1.1)　17

·Declaring an Array　18

·C***tructing an Array　19

·Initializing an Array　21

* Using a Variable or Array Element That Is Uninitialized and Unassigned (Exam Objective 4.5)　32

·Primitive and Object Type Instance Variables　33

·Local (Stack, Automatic) Primitives and Objects　36

* Command-Line Arguments to Main (Exam Objective 4.3)　40

·Exercise 1-1: Creating a Program That Outputs Command-Line Arguments　41

√(Two-Minute Drill　43

* Q&A　Self Test　46

·Self Test Answers　54

·Exercise Answers　57

2　Declarati*** and Access Control　59

* Declarati*** and Modifiers (Exam Objective 1.2)　60

·Class Declarati*** and Modifiers　61

·Exercise 2-1: Creating an Abstract Superclass and Concrete Subclass　68

·Method and Variable Declarati*** and Modifiers　68

* Declaration Rules (Exam Objective 4.1)　104

·Source Files, Package Declarati***, and Import Statements　105

·Formatting the Main() Method　111

* Interface Implementation (Exam Objective 4.2)　113

·Declaring an Interface　113

·Declaring Interface C***tants　116

·Implementing an Interface　119

√Two-Minute Drill　127

* Q&A　Self Test　134

·Self Test Answers　141

3　***s and Assignments　145

* Java ***s (Exam Objective 5.1)　146

·Assignment ***s　146

·Comparison ***s　155

·instanceof Comparison　156

·Equality ***s　159

·Arithmetic ***s　162

·Shift ***s　168

·Exercise 3-1: Using Shift ***s　172

·Bitwise ***s　172

·Bitwise Complement ***　175

·Conditional ***　175

·Primitive Casting　177

·Exercise 3-2: Casting Primitives　179

* Logical ***s (Exam Objective 5.3)　179

·Short-Circuit Logical ***s　180

·Logical ***s (not Short-Circuit)　182

·Passing Variables into Methods (Exam Objective 5.4)　183

·Passing Object Reference Variables　183

·Does Java Use Pass-By-Value Semantics?　184

·Passing Primitive Variables　185

√Two-Minute Drill　190

* Q&A　Self Test　195

·Self Test Answers　206

·Exercise Answers　209

4　Flow Control, Excepti***, and Asserti***　211

* Writing Code Using if and switch Statements (Exam Objective 2.1)　212

·if-else Branching　213

·switch Statements　217

·Exercise 4-1: Creating a switch-case Statement　224

* Writing Code Using Loops (Exam Objective 2.2)　224

·Using while Loops　225

·Using do-while Loops　226

·Using for Loops　226

·Using break and continue in for Loops　231

·Unlabeled Statements　232

·Labeled Statements　233

·Exercise 4-2: Creating a Labeled while Loop　235

* Handling Excepti*** (Exam Objectives 2.3 and 2.4)　235

·Catching an Exception Using try and catch　236

·Using finally　238

·Propagating Uncaught Excepti***　240

·Exercise 4-3: Propagating and Catching an Exception 　243

·Defining Excepti***　243

·Exception Hierarchy　244

·Handling an Entire Class Hierarchy of Excepti***　246

·Exception Matching　247

·Exception Declaration and the Public Interface　249

·Rethrowing the Same Exception　254

·Exercise 4-4: Creating an Exception　255

* Working with the Assertion Mechanism (Exam Objectives 2.4 and 2.5)　256

·Asserti*** Overview　257

·Enabling Asserti***　259

·Using Asserti*** Appropriately　263

√Two-Minute Drill　269

* Q&A　Self Test　273

·Self Test Answers　285

·Exercise Answers　288

5　Object Orientation, Overloading and Overriding, C***tructors, and Return Types　291

* Benefits of Encapsulation (Exam Objective 6.1)　292

·IS-A and HAS-A Relati***hips　296

·Overridden and Overloaded Methods (Exam Objective 6.2)　301

·Overridden Methods　301

·Overloaded Methods　305

* C***tructors and Instantiation (Exam Objectives 1.3, 6.3, 6.2)　312

·C***tructor Basics　313

·Determine Whether a Default C***tructor Will Be Created　316

·Overloaded C***tructors　321

* Legal Return Types (Exam Objective 1.4)　326

·Return Type Declarati***　326

·Returning a Value　327

√Two-Minute Drill　332

* Q&A　Self Test　336

·Self Test Answers　347

6　Java.lang-The Math Class, Strings, and Wrappers　351

* Using the String Class (Exam Objective 8.2)　352

·Strings Are Immutable Objects　352

·Important Facts About Strings and Memory　359

·Important Methods in the String Class　360

·The StringBuffer Class　363

·Important Methods in the StringBuffer Class　365

* Using the Math Class (Exam Objective 8.1)　367

·Methods of the java.lang.Math Class　367

·Exercise 6-1: Using the Math Class　370

·Exercise 6-2: Rounding Random Numbers　373

·Miscellaneous Math Class Facts　375

* Using Wrapper Classes (Exam Objective 8.3)　376

·An Overview of the Wrapper Classes　376

·Creating Wrapper Objects　377

·Using Wrapper Conversion Utilities　378

* Using equals()(Exam Objective 5.2)　382

·An Overview of == and the equals() Method　382

√Two-Minute Drill　387

* Q&A　Self Test　390

·Self Test Answers　400

·Exercise Answers　403

7　Objects and Collecti***　405

* Overriding hashCode() and equals() (Exam Objective 9.2)　406

·Overriding equals()　408

·Overriding hashCode()　413

* Collecti*** (Exam Objective 9.1)　420

·So What Do You Do with a Collection?　420

* Garbage Collection (Exam Objectives 3.1, 3.2, 3.3)　430

·Overview of Memory Management and Garbage Collection　430

·Overview of Java's Garbage Collector　431

·Writing Code That Explicitly Makes Objects Eligible for Collection　433

·Forcing Garbage Collection　436

·Cleaning Up Before Garbage Collection-the Finalize() Method　438

√Two-Minute Drill　443

* Q&A　Self Test　447

·Self Test Answers　453

8　Inner Classes　455

* Inner Classes　457

·Coding a “Regular” Inner Class　458

·Referencing the Inner or Outer Instance from Within the Inner Class　462

* Method-Local Inner Classes　464

* Anonymous Inner Classes　467

* Static Nested Classes　474

·Instantiating a Static Nested Class　475

√Two-Minute Drill　478

* Q&A　Self Test　481

·Self Test Answers　487

9　Threads　491

* Defining, Instantiating, and Starting Threads (Exam Objective 7.1)　492

·Defining a Thread　495

·Instantiating a Thread　496

·Starting a Thread　498

* Preventing Thread Execution (Exam Objective 7.2)　508

·Sleeping　508

·Exercise 9-1: Creating a Thread and Putting It to Sleep　 511

·Thread Priorities and Yield　511

* Synchronizing Code (Exam Objective 7.3)　515

·Synchronization and Locks　522

·Exercise 9-2: Synchronizing a Block of Code　524

* Thread In***ction (Exam Objective 7.4)　527

·Using notifyAll() When Many Threads May Be Waiting 　532

√Two-Minute Drill　536

* Q&A　Self Test　540

·Self Test Answers　550

·Exercise Answers　554

Part II　The Developer's Exam　557

10　Introduction to the SCJD　559

* Understand the Sun Certified Java Developer Exam Process　560

·How Does It Work?　561

·Are You a Good Candidate?　562

·How Much Does It Cost?　563

·How Long Does It Take?　563

·What's the Exam Deliverable?　563

·Can I Develop with an IDE?　563

·How Is It Graded?　564

·What Are the Exam Assessors Thinking?　564

·What Are the Exam Assessors NOT Thinking?　566

·What's the Assignment Like?　566

·Overview of the Developer Exam Chapters　569

·Key Points Summary　571

11　Coding Standards　573

* Use Sun Java Coding Standards　574

·Spacing Standards　574

·How to Care for Your Curly Braces　578

·Our Comments About Comments　581

·Declarati*** Are Fun　583

·Key Points Summary　585

12　Clarity and Maintainability　587

·Write Clear and Maintainable Code　588

·General Programming C***iderati***　588

·Follow Basic OO Design Principles　594

·Don't Reinvent the Wheel　596

·Handle Errors Appropriately　598

·Key Points Summary　601

13　Designing the Graphical User Interface　605

* Creating a Usable and Extensible GUI　606

·An Overview of Technical C***iderati*** for Your GUI 　606

·Introduction to Usability Design　607

1. Use-Cases and the Business Function　608

2. Principles of Good Screen Design　610

3. Choosing Your Widgets, JTable, and What Army?　612

4. Screen Layout for Your Project　615

5. Menus and Navigation　616

6. Messages, Feedback, and Dialog Boxes　619

7. How to Use Colors in Your GUI　621

8. How to Test Your GUI　621

·Key Points Summary　623

14　Networking Issues　627

* Understand Networking Issues　628

·RMI and Sockets　628

·Questi*** to Ask Yourself　631

·Key Points Summary　634

15　Database Issues　635

* Understand Database Issues　636

·Building a Database　636

·Questi*** to Ask Yourself　637

16　Exam Documentation　641

* Understand the Sun Certified Java Developer Exam Documentation Requirements　642

·Developer's Documentation　642

·End User Documentation　643

·javadoc and You　643

·The Developer's Choices Document　656

·The Return of Comments and the Versi*** File　657

·Key Points Summary　658

17　Final Submission and Essay　661

* Preparing the Final Submission　662

·File Organization　662

·The Follow-Up Essay　668

·Key Points Summary　669

A　About the CD　673

* System Requirements　674

* LearnKey Additional Training　674

* Installing and Running MasterExam　674

·MasterExam　675

* Electronic Book　675

* Help　675

* Removing Installation(s)　675

* Technical Support　676

* LearnKey Technical Support　676

* Glossary　677

* Index　691

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