本书是关于Java语言编程的优秀教材之一，秉承Deitel系列丛书的一贯特点：内容丰富、覆盖面广，提供详细代码与实例研究，总结出大量的面向对象编程技巧和经验。本书详细说明了在Java中面向对象编程的基本理论及实用知识，由初学者为起点，由点到面、由浅入深、循序渐进地介绍了事件处理、对象、接口、内置类、继承、多态性、数据结构和集合、查找与排序、流文件、applet、图形用户界面及多线程等，并且详细介绍了网络应用的开发与实践。第九版在前一版的基础上增加了更多的实际案例，更新了很多内容，有助于读者学习和借鉴。本书包括更广泛的教学特性，其中列举了数百个可实际使用的程序实例，并给出实际的运行结果，可以使学生在学习时更为直观。

　　学习Java语言的经典教材之一：
　　*提供了很多的基础的、覆盖面很广的实例。
　　*丰富的教辅资源，源代码可直接使用。
　　*网络应用的开发与实践。
　　*内容全面，适合不同层次的读者需求。

　　Preface
　　Liveinfragmentsnolonger,onlyconnect.
　　—EdgarMorganFoster
　　WelcometoJavaandJavaHowtoProgram,NinthEdition!Thisbookpresentsleadingedgecomputingtechnologiesforstudents,instructorsandsoftwaredevelopers.
　　ThenewChapter1engagesstudentswithintriguingfactsandfigurestogetthemexcitedaboutstudyingcomputersandprogramming.Thechapterincludesatableofsomeoftheresearchmadepossiblebycomputers;currenttechnologytrendsandhardwarediscussion;thedatahierarchy;atableofmobileandInternetappplatforms;anewsectiononsocialnetworking;anintroductiontoAndroid;atableofpopularwebservices;atableofbusinessandtechnologypublicationsandwebsitesthatwillhelpyoustayuptodatewiththelatesttechnologynewsandtrends;andupdatedexercises.
　　ThebookisappropriateforintroductorycoursesequencesbasedontheACM/IEEEcurriculumrecommendationsandforAPComputerScienceexampreparation.
　　Wefocusonsoftwareengineeringbestpractices.AttheheartofthebookistheDeitelsignature“live-codeapproach”—conceptsarepresentedinthecontextofcompleteworkingprograms,ratherthanincodesnippets.Eachcompletecodeexampleisaccompaniedbylivesampleexecutions.Allthesourcecodeisavailableatwww.deitel.com/books/jhtp9/.
　　Asyoureadthebook,ifyouhavequestions,sendane-mailtodeitel@deitel.com;we’llrespondpromptly.Forupdatesonthisbook,visitwww.deitel.com/books/jhtp9/,followusonFacebook(www.deitel.com/deitelfan)andTwitter(@deitel),andsubscribetotheDeitelBuzzOnlinenewsletter(www.deitel.com/newsletter/subscribe.html).
　　NewandUpdatedFeatures
　　Herearetheupdateswe’vemadeforJavaHowtoProgram,9/e:
　　JavaStandardEdition(SE)7
　　lEasytouseasaJavaSE6orJavaSE7book.ThereareafewJavaStandardEdition(SE)7featuresthataffectCS1andCS2courses.Wecoverthosefeaturesinoptionalmodularsectionsthatareeasytoincludeoromit.Here’ssomeofthenewfunctionality:Stringsinswitchstatements,thetry-with-resourcesstatementformanagingAutoClosableobjects,multi-catchfordefiningasingleexceptionhandlertoreplacemultipleexceptionhandlersthatperformthesametask,theNIOfilesystemAPIsandinferringthetypesofgenericobjectsfromthevariablethey’reassignedtobyusingthe＜＞notation.WealsooverviewthenewconcurrencyAPIfeatures.
　　lJavaSE7filesystemAPIs.WeprovideanalternateonlineversionofChapter17,Files,StreamsandObjectSerialization,that’sreimplementedwiththenewfilesystemAPIsfromJavaSE7.
　　lJavaSE7’sAutoClosableversionsofConnection,StatementandResultSet.WiththesourcecodeforChapter28,AccessingDatabaseswithJDBC,weprovideaversionofthechapter’sfirstexamplethat’simplementedusingJavaSE7’sAutoClosableversionsofConnection,StatementandResultSet.AutoClosableobjectsreducethelikelihoodofresourceleakswhenyouusethemwithJavaSE7’stry-with-resourcesstatement,whichautomaticallyclosestheAutoClosableobjectsallocatedintheparenthesesfollowingthetrykeyword.
　　PedagogicFeatures
　　lEnhancedMakingaDifferenceexercisesset.WeencourageyoutousecomputersandtheInternettoresearchandsolvesignificantsocialproblems.Theseexercisesaremeanttoincreaseawarenessanddiscussionofimportantissuestheworldisfacing.Wehopeyou’llapproachthemwithyourownvalues,politicsandbeliefs.CheckoutournewMakingaDifferenceResourceCenteratwww.deitel.com/MakingADifferenceforadditionalideasyoumaywanttoinvestigatefurther.
　　lPagenumbersforkeytermsinchaptersummaries.Forkeytermsthatappearinthechaptersummaries,weincludethepagenumberofthekeyterm’sdefiningoccurrence.
　　ObjectTechnology
　　lObject-orientedprogramminganddesign.WeintroducethebasicconceptsandterminologyofobjecttechnologyinChapter1.StudentsdeveloptheirfirstcustomizedclassesandobjectsinChapter3.Presentingobjectsandclassesearlygetsstudents“t

　　Paul Deitel和Harvey Deitel是全球畅销的编程语言教材和专业图书作家，“How to Program”系列是其*负盛名的一套计算机编程教材，已经销售近40年，并被翻译成中文在内的十几种语言。他们成立的Deitel & Associates公司是一家国际知名的企业培训和写作公司， 专门进行计算机编程语言、对象技术、移动应用开发及Internet和Web软件技术方面的培训和写作，出版了一流的编程专业的大学教材、 专业图书以及LiveLessons视频课程。

Contents 
Chapter 1 Introduction to Computers and Java 1 
1．1 Introduction 2 
1．2 Computers： Hardware and Software 4 
1．3 Data Hierarchy 5 
1．4 Computer Organization 6 
1．5 Machine Languages， Assembly Languages and High-Level Languages 7 
1．6 Introduction to Object Technology 8 
1．7 Operating Systems 10 
1．8 Programming Languages 12 
1．9 Java and a Typical Java Development Environment 14 
1．10 Test-Driving a Java Application 17 
1．11 Web 2．0： Going Social 21 
1．12 Software Technologies 23 
1．13 Keeping Up-to-Date with Information Technologies 24 
1．14 Wrap-Up 24 
Chapter 2 Introduction to Java Applications 29 
2．1 Introduction 29 
2．2 Your First Program in Java： Printing a Line of Text 30 
2．3 Modifying Your First Java Program 35 
2．4 Displaying Text with printf 36 
2．5 Another Application： Adding Integers 37 
2．6 Memory Concepts 41 
2．7 Arithmetic 42 
2．8 Decision Making： Equality and Relational Operators 45 
2．9 Wrap-Up 48 
Chapter 3 Introduction to Classes， Objects， Methods and Strings 58 
3．1 Introduction 58 
3．2 Declaring a Class with a Method and Instantiating an Object of a Class 59 
3．3 Declaring a Method with a Parameter 62 
3．4 Instance Variables， set Methods and get Methods 64 
3．5 Primitive Types vs． Reference Types 68 
3．6 Initializing Objects with Constructors 69 
3．7 Floating-Point Numbers and Type double 71 
3．8 (Optional) GUI and Graphics Case Study： Using Dialog Boxes 75 
3．9 Wrap-Up 77 
Chapter 4 Control Statements： Part 1 84 
4．1 Introduction 85 
4．2 Algorithms 85 
4．3 Pseudocode 85 
4．4 Control Structures 86 
4．5 if Single-Selection Statement 88 
4．6 if…else Double-Selection Statement 89 
4．7 while Repetition Statement 92 
4．8 Formulating Algorithms： Counter-Controlled Repetition 93 
4．9 Formulating Algorithms： Sentinel-Controlled Repetition 97 
4．10 Formulating Algorithms： Nested Control Statements 103 
4．11 Compound Assignment Operators 107 
4．12 Increment and Decrement Operators 107 
4．13 Primitive Types 110 
4．14 (Optional) GUI and Graphics Case Study： Creating Simple Drawings 110 
4．15 Wrap-Up 113 
Chapter 5 Control Statements： Part 2 126 
5．1 Introduction 126 
5．2 Essentials of Counter-Controlled Repetition 127 
5．3 for Repetition Statement 128 
5．4 Examples Using the for Statement 131 
5．5 do…while Repetition Statement 135 
5．6 switch Multiple-Selection Statement 136 
5．7 break and continue Statements 142 
5．8 Logical Operators 144 
5．9 Structured Programming Summary 148 
5．10 (Optional) GUI and Graphics Case Study： Drawing Rectangles and Ovals 152 
5．11 Wrap-Up 154 
Chapter 6 Methods： A Deeper Look 164 
6．1 Introduction 165 
6．2 Program Modules in Java 165 
6．3 static Methods， static Fields and Class Math 166 
6．4 Declaring Methods with Multiple Parameters 168 
6．5 Notes on Declaring and Using Methods 171 
6．6 Method-Call Stack and Activation Records 172 
6．7 Argument Promotion and Casting 172 
6．8 Java API Packages 173 
6．9 Case Study： Random-Number Generation 175 
6．10 Case Study： A Game of Chance; Introducing Enumerations 179 
6．11 Scope of Declarations 182 
6．12 Method Overloading 184 
6．13 (Optional) GUI and Graphics Case Study： Colors and Filled Shapes 186 
6．14 Wrap-Up 188 
Chapter 7 Arrays and ArrayLists 201 
7．1 Introduction 202 
7．2 Arrays 202 
7．3 Declaring and Creating Arrays 203 
7．4 Examples Using Arrays 204 
7．5 Case Study： Card Shuffling and Dealing Simulation 212 
7．6 Enhanced for Statement 215 
7．7 Passing Arrays to Methods 216 
7．8 Case Study： Class GradeBook Using an Array to Store Grades 219 
7．9 Multidimensional Arrays 223 
7．10 Case Study： Class GradeBook Using a Two-Dimensional Array 226 
7．11 Variable-Length Argument Lists 230 
7．12 Using Command-Line Arguments 232 
7．13 Class Arrays 233 
7．14 Introduction to Collections and Class ArrayList 235 
7．15 (Optional) GUI and Graphics Case Study： Drawing Arcs 237 
7．16 Wrap-Up 240 
Chapter 8 Classes and Objects： A Deeper Look 259 
8．1 Introduction 260 
8．2 Time Class Case Study 260 
8．3 Controlling Access to Members 263 
8．4 Referring to the Current Object’s Members with the this Reference 264 
8．5 Time Class Case Study： Overloaded Constructors 266 
8．6 Default and No-Argument Constructors 270 
8．7 Notes on Set and Get Methods 271 
8．8 Composition 272 
8．9 Enumerations 274 
8．10 Garbage Collection and Method finalize 276 
8．11 static Class Members 277 
8．12 static Import 280 
8．13 final Instance Variables 281 
8．14 Time Class Case Study： Creating Packages 282 
8．15 Package Access 286 
8．16 (Optional) GUI and Graphics Case Study： Using Objects with Graphics 287 
8．17 Wrap-Up 290 
Chapter 9 Object-Oriented Programming： Inheritance 298 
9．1 Introduction 298 
9．2 Superclasses and Subclasses 299 
9．3 protected Members 301 
9．4 Relationship between Superclasses and Subclasses 302 
9．5 Constructors in Subclasses 318 
9．6 Software Engineering with Inheritance 319 
9．7 Class Object 320 
9．8 (Optional) GUI and Graphics Case Study： Displaying Text and Images Using Labels 320 
9．9 Wrap-Up 322 
Chapter 10 Object-Oriented Programming： Polymorphism 326 
10．1 Introduction 327 
10．2 Polymorphism Examples 328 
10．3 Demonstrating Polymorphic Behavior 329 
10．4 Abstract Classes and Methods 331 
10．5 Case Study： Payroll System Using Polymorphism 333 
10．6 final Methods and Classes 346 
10．7 Case Study： Creating and Using Interfaces 346 
10．8 (Optional) GUI and Graphics Case Study： Drawing with Polymorphism 356 
10．9 Wrap-Up 357 
Chapter 11 Exception Handling： A Deeper Look 362 
11．1 Introduction 363 
11．2 Example： Divide by Zero without Exception Handling 363 
11．3 Example： Handling ArithmeticExceptions and InputMismatchExceptions 365 
11．4 When to Use Exception Handling 369 
11．5 Java Exception Hierarchy 369 
11．6 finally Block 372 
11．7 Stack Unwinding and Obtaining Information from an Exception Object 375 
11．8 Chained Exceptions 378 
11．9 Declaring New Exception Types 379 
11．10 Preconditions and Postconditions 380 
11．11 Assertions 381 
11．12 (New in Java SE 7) Multi-catch： Handling Multiple Exceptions in One catch 382 
11．13 (New in Java SE 7) try-with-Resources： Automatic Resource Deallocation 382 
11．14 Wrap-Up 383 
Chapter 12 ATM Case Study， Part 1： Object-Oriented Design with the UML 388 
12．1 Case Study Introduction 388 
12．2 Examining the Requirements Document 389 
12．3 Identifying the Classes in a Requirements Document 395 
12．4 Identifying Class Attributes 400 
12．5 Identifying Objects’ States and Activities 404 
12．6 Identifying Class Operations 407 
12．7 Indicating Collaboration Among Objects 412 
12．8 Wrap-Up 418 
Chapter 13 ATM Case Study Part 2： Implementing an Object-Oriented Design 421 
13．1 Introduction 422 
13．2 Starting to Program the Classes of the ATM System 422 
13．3 Incorporating Inheritance and Polymorphism into the ATM System 425 
13．4 ATM Case Study Implementation 431 
13．5 Wrap-Up 449 
Chapter 14 GUI Components： Part 1 451 
14．1 Introduction 452 
14．2 Java’s New Nimbus Look-and-Feel 453 
14．3 Simple GUI-Based Input/Output with JOptionPane 454 
14．4 Overview of Swing Components 456 
14．5 Displaying Text and Images in a Window 457 
14．6 Text Fields and an Introduction to Event Handling with Nested Classes 461 
14．7 Common GUI Event Types and Listener Interfaces 466 
14．8 How Event Handling Works 467 
14．9 JButton 468 
14．10 Buttons That Maintain State 471 
14．11 JComboBox; Using an Anonymous Inner Class for Event Handling 476 
14．12 JList 479 
14．13 Multiple-Selection Lists 480 
14．14 Mouse Event Handling 482 
14．15 Adapter Classes 486 
14．16 JPanel Subclass for Drawing with the Mouse 488 
14．17 Key Event Handling 491 
14．18 Introduction to Layout Managers 493 
14．19 Using Panels to Manage More Complex Layouts 501 
14．20 JTextArea 502 
14．21 Wrap-Up 504 
Chapter 15 Graphics and Java 2D 517 
15．1 Introduction 517 
15．2 Graphics Contexts and Graphics Objects 519 
15．3 Color Control 520 
15．4 Manipulating Fonts 525 
15．5 Drawing Lines， Rectangles and Ovals 529 
15．6 Drawing Arcs 531 
15．7 Drawing Polygons and Polylines 533 
15．8 Java 2D API 535 
15．9 Wrap-Up 541 
Chapter 16 Strings， Characters and Regular Expressions 549 
16．1 Introduction 550 
16．2 Fundamentals of Characters and Strings 550 
16．3 Class String 551 
16．4 Class StringBuilder 561 
16．5 Class Character 566 
16．6 Tokenizing Strings 570 
16．7 Regular Expressions， Class Pattern and Class Matcher 571 
16．8 Wrap-Up 577 
Chapter 17 Files， Streams and Object Serialization 588 
17．1 Introduction 589 
17．2 Files and Streams 589 
17．3 Class File 590 
17．4 Sequential-Access Text Files 593 
17．5 Object Serialization 605 
17．6 Additional java．io Classes 612 
17．7 Opening Files with JFileChooser 614 
17．8 Wrap-Up 617 
Chapter 18 Recursion 625 
18．1 Introduction 625 
18．2 Recursion Concepts 626 
18．3 Example Using Recursion： Factorials 627 
18．4 Example Using Recursion： Fibonacci Series 630 
18．5 Recursion and the Method-Call Stack 632 
18．6 Recursion vs． Iteration 633 
18．7 Towers of Hanoi 635 
18．8 Fractals 636 
18．9 Recursive Backtracking 644 
18．10 Wrap-Up 645 
Chapter 19 Searching， Sorting and Big O 652 
19．1 Introduction 652 
19．2 Searching Algorithms 653 
19．3 Sorting Algorithms 660 
19．4 Wrap-Up 671 
Chapter 20 Generic Collections 676 
20．1 Introduction 677 
20．2 Collections Overview 677 
20．3 Type-Wrapper Classes for Primitive Types 678 
20．4 Autoboxing and Auto-Unboxing 678 
20．5 Interface Collection and Class Collections 679 
20．6 Lists 679 
20．7 Collections Methods 686 
20．8 Stack Class of Package java．util 694 
20．9 Class PriorityQueue and Interface Queue 696 
20．10 Sets 697 
20．11 Maps 699 
20．12 Properties Class 702 
20．13 Synchronized Collections 704 
20．14 Unmodifiable Collections 705 
20．15 Abstract Implementations 706 
20．16 Wrap-Up 706 
Chapter 21 Generic Classes and Methods 712 
21．1 Introduction 712 
21．2 Motivation for Generic Methods 713 
21．3 Generic Methods： Implementation and Compile-Time Translation 715 
21．4 Additional Compile-Time Translation Issues： Methods That Use a Type Parameter as 
the Return Type 717 
21．5 Overloading Generic Methods 720 
21．6 Generic Classes 720 
21．7 Raw Types 726 
21．8 Wildcards in Methods That Accept Type Parameters 729 
21．9 Generics and Inheritance： Notes 732 
21．10 Wrap-Up 733 
Chapter 22 Custom Generic Data Structures 737 
22．1 Introduction 737 
22．2 Self-Referential Classes 738 
22．3 Dynamic Memory Allocation 739 
22．4 Linked Lists 739 
22．5 Stacks 747 
22．6 Queues 750 
22．7 Trees 752 
22．8 Wrap-Up 757 
Chapter 23 Applets and Java Web Start 767 
23．1 Introduction 767 
23．2 Sample Applets Provided with the JDK 768 
23．3 Simple Java Applet： Drawing a String 772 
23．4 Applet Life-Cycle Methods 775 
23．5 Initialization with Method init 776 
23．6 Sandbox Security Model 777 
23．7 Java Web Start and the Java Network Launch Protocol (JNLP) 778 
23．8 Wrap-Up 783 
Chapter 24 Multimedia： Applets and Applications 788 
24．1 Introduction 788 
24．2 Loading， Displaying and Scaling Images 789 
24．3 Animating a Series of Images 794 
24．4 Image Maps 799 
24．5 Loading and Playing Audio Clips 801 
24．6 Playing Video and Other Media with Java Media Framework 804 
24．7 Wrap-Up 807 
24．8 Web Resources 807 
Chapter 25 GUI Components： Part 2 815 
25．1 Introduction 815 
25．2 JSlider 816 
25．3 Windows： Additional Notes 819 
25．4 Using Menus with Frames 820 
25．5 JPopupMenu 826 
25．6 Pluggable Look-and-Feel 828 
25．7 JDesktopPane and JInternalFrame 831 
25．8 JTabbedPane 834 
25．9 Layout Managers： BoxLayout and GridBagLayout 836 
25．10 Wrap-Up 845 
Chapter 26 Multithreading 850 
26．1 Introduction 851 
26．2 Thread States： Life Cycle of a Thread 852 
26．3 Creating and Executing Threads with Executor Framework 855 
26．4 Thread Synchronization 858 
26．5 Producer/Consumer Relationship without Synchronization 864 
26．6 Producer/Consumer Relationship： ArrayBlockingQueue 870 
26．7 Producer/Consumer Relationship with Synchronization 872 
26．8 Producer/Consumer Relationship： Bounded Buffers 877 
26．9 Producer/Consumer Relationship： The Lock and Condition Interfaces 883 
26．10 Concurrent Collections Overview 888 
26．11 Multithreading with GUI 889 
26．12 Interfaces Callable and Future 899 
26．13 Java SE 7： Fork/Join Framework 900 
26．14 Wrap-Up 900 
Chapter 27 Networking 908 
27．1 Introduction 908 
27．2 Manipulating URLs 909 
27．3 Reading a File on a Web Server 913 
27．4 Establishing a Simple Server Using Stream Sockets 915 
27．5 Establishing a Simple Client Using Stream Sockets 917 
27．6 Client/Server Interaction with Stream Socket Connections 918 
27．7 Datagrams： Connectionless Client/Server Interaction 927 
27．8 Client/Server Tic-Tac-Toe Using a Multithreaded Server 932 
27．9 [Web Bonus] Case Study： DeitelMessenger 943 
27．10 Wrap-Up 943 
Chapter 28 Accessing Databases with JDBC 949 
28．1 Introduction 950 
28．2 Relational Databases 951 
28．3 Relational Database Overview： The books Database 951 
28．4 SQL 954 
28．5 Instructions for Installing MySQL and MySQL Connector/J 960 
28．6 Instructions for Setting Up a MySQL User Account 961 
28．7 Creating Database books in MySQL 962 
28．8 Manipulating Databases with JDBC 963 
28．9 RowSet Interface 976 
28．10 Java DB/Apache Derby 978 
28．11 PreparedStatements 979 
28．12 Stored Procedures 991 
28．13 Transaction Processing 991 
28．14 Wrap-Up 992 
28．15 Web Resources 992 
Chapter 29 JavaServer Faces Web Apps： Part 1 999 
29．1 Introduction 1000 
29．2 HyperText Transfer Protocol (HTTP) Transactions 1000 
29．3 Multitier Application Architecture 1004 
29．4 Your First JSF Web App 1004 
29．5 Model-View-Controller Architecture of JSF Apps 1011 
29．6 Common JSF Components 1011 
29．7 Validation Using JSF Standard Validators 1014 
29．8 Session Tracking 1019 
29．9 Wrap-Up 1025 
Chapter 30 JavaServer Faces Web Apps： Part 2 1032 
30．1 Introduction 1032 
30．2 Accessing Databases in Web Apps 1033 
30．3 Ajax 1042 
30．4 Adding Ajax Functionality to the Validation App 1044 
30．5 Wrap-Up 1046 
Chapter 31 Web Services 1050 
31．1 Introduction 1051 
31．2 Web Service Basics 1052 
31．3 Simple Object Access Protocol (SOAP) 1052 
31．4 Representational State Transfer (REST) 1053 
31．5 JavaScript Object Notation (JSON) 1053 
31．6 Publishing and Consuming SOAP-Based Web Services 1054 
31．7 Publishing and Consuming REST-Based XML Web Services 1063 
31．8 Publishing and Consuming REST-Based JSON Web Services 1067 
31．9 Session Tracking in a SOAP Web Service 1070 
31．10 Consuming a Database-Driven SOAP Web Service 1082 
31．11 Equation Generator： Returning User-Defined Types 1087 
31．12 Wrap-Up 1095 
Appendix A Operator Precedence Chart 1103 
Appendix B ASCII Character Set 1104 
Appendix C Keywords and Reserved Words 1105 
Appendix D Primitive Types 1106 
Index 1107 






附录E～附录L请登录华信教育资源网(www．hxedu．com．cn)注册下载。 
Appendix E Using the Java API Documentation 
Appendix F Using the Debugger 
Appendix G Formatted Output 
Appendix H Number Systems 
Appendix I GroupLayout 
Appendix J Java Desktop Integration Components 
Appendix K Mashups 
Appendix L Unicode?