book

Just Java™ 2, Fifth Edition

Name: Just Java™ 2, Fifth Edition
Author: Peter van der Linden
ISBN: 9780130320728

by Peter van der Linden

December 2001

Intermediate to advanced

1136 pages

24h 12m

English

Pearson

Read now

Unlock full access

Copyright
Dedication
Acknowledgments
Using the Just Java CD-ROM
About the CD-ROMRunning the Java Tools
I. Language
1. What Is Java?
Compiling and Executing a Sample ProgramThe Biggest Java Benefit: Future-ProofingWhy Software Portability MattersJ2EE, J2ME, J2SE EditionsJava Virtual MachineThe “Java Platform”The Java LanguageJava LibrariesHow New Libraries are DevelopedThree Execution EnvironmentsAppletsServer-Side JavaSome Light Relief—A Java Desktop Application
2. The Story of O: Object-Oriented Programming
AbstractionEncapsulationComparing Primitive Types to Class TypesDefining a TypeDeclaring VariablesNewsflash: Object vs. Reference to an Object!Operations on Primitive Types/Methods on ObjectsThe One-Minute Object ManagerCreating New Objects: ConstructorsA First Glimpse at InheritanceHow Constructors Are InvokedNo DestructorsMethodsYou Always Get to an Object with a “Reference Variable”The “null” ReferenceDynamic Data StructuresPer-Instance and Per-Class MembersStatic DataStatic MethodsStatic BlocksStatic ClassesThe “final” ModifierThe “Blank Final Variable”Access ModifiersExercisesSome Light Relief—It’s Not Your Father’s IBM
3. Explanation of a Sample Program
Explanation of the Example ProgramApplications vs. Applets vs. ServletsWhere an Application StartsRuntime Internals: Stack and HeapThe Class “Object”Reading the Java APISome Light Relief—Napster and LimeWire
4. Identifiers, Keywords, and Types
Java and UnicodeScanningIdentifiersCommentsKeywordsUsed for built-in types:Used for objects:Used in statements:Used to modify declarations (visibility, sharing, etc.):Used for other method or class-related purposes:Used for larger-than-a-single-class building blocks:Reserved for possible future use:The Primitive TypesbooleanintlongbyteshortdoublefloatcharStringString ConcatenationString Comparison and intern()Some Light Relief—Hatless Atlas
5. Names, Arrays, Operators, and Accuracy
NamesWhen Can an Identifier Be Forward-Referenced?ExpressionsArraysCreating an ArrayInitializing an ArrayArrays of Arrays of …Have Array Brackets, Will TravelOperatorsJava OperatorsThe ++ and -OperatorsThe % and / OperatorsThe << >> and >>> OperatorsThe instanceof OperatorThe & | and ^ OperatorsThe && and || OperatorsThe ? ... : OperatorThe Assignment OperatorsThe Comma Operator Is GoneAssociativityHow Accurate Are Calculations?Floating-Point ExtensionWidening and Narrowing ConversionsWhat Happens on Overflow?Integer OverflowFloating Point OverflowArithmetic That Cannot OverflowThe Math PackageFurther ReadingSome Light Relief—Too Much Bread
6. More OOP—Extending Classes
InheritanceA Java Example of InheritanceWhat Happens When Names Collide?Compatibility of Superclass and SubclassCastingPolymorphismOverloadingOverridingInheriting from ObjectForcing Overriding off: FinalForcing Overriding: AbstractThe Class Whose Name Is ClassExercisesSome Light Relief—The Nerd Detection System

7. Java Statements
“Organizing” StatementsExpression StatementsSelection StatementsStatement NotesStatement NotesIteration StatementsStatement NotesStatement NotesStatement NotesTransfer of Control StatementsStatement NotesExceptionsThe Purpose of ExceptionsHow to Cause an Exception (Implicitly and Explicitly)Triggering an ExceptionHow to Handle (“Catch”) an Exception Within the Method Where It Was ThrownHandling Groups of Related ExceptionsHow the Exception Propagates If Not Handled in the Method Where It Was ThrownHow and Why Methods Declare the Exceptions That Can Propagate Out of ThemFancy Exception StuffSummary of ExceptionsThe Assert StatementFurther ReadingExercisesSome Light Relief—MiniScribe: The Hard Luck Hard Disk
8. Interfaces
What Problem Does an Interface Solve?ComparableInterfaces vs. Abstract ClassesGranting Permission Through an Interface—CloneableWhat Protected Really MeansInterfaces in the Java RuntimesCall BacksUsing Inter faces for Named ConstantsThe Class DoubleExercisesSome Light Relief—The Odyssey of Naming Hal
9. Packages and Visibility
What Are Packages For?How to Choose a Package NameHow the JVM Finds ClassesPutting the Jar File Where Java Will Find ItTelling Java Where to Look for the Jar File or Package RootsPackages and Access ModifiersAccess Between Two Classes in the Same PackageAccess Between Two Unrelated Classes in Different PackagesAccess Between a Parent and Child Class in Different PackagesHow Many Packages in a Directory?Compilation UnitsImportNested ClassesNested Static ClassesMember ClassesLocal ClassesAnonymous ClassesHow Inner Classes Are CompiledThe Class CharacterJava Coding StyleExercisesSome Light Relief—The Domestic Obfuscated Java Code Non-Competition
10. Doing Several Things at Once: Threads
What Are Threads?Two Ways to Obtain a New ThreadA Few Words on RunnableThe Lifecycle of a ThreadPrioritiesThread GroupsFour Kinds of Threads ProgrammingUnrelated ThreadsRelated but Unsynchronized ThreadsSome Light Relief—The Motion Sensor Solution
11. Advanced Thread Topics
More Thread ProgrammingMutually-Exclusive ThreadsCommunicating Mutually-Exclusive ThreadsInterrupting a ThreadPiped I/O for ThreadsThread Local StorageGarbage CollectionWhy Do We Need Garbage Collection?Garbage Collection AlgorithmsFinalizersWeak ReferencesDesign PatternsFurther ReadingExercisesSome Light Relief—Are You Certifiable?Sun Certified Java Programmer
12. Practical Example Explained
Case Study Java Program: Fritter Engine ShuntExercisesSome Light Relief—Apple Armchair Advice
II. Key Libraries
13. Simple Input Output
Design PhilosophyFile and FileDescriptor ClassesPublic members of java.io.FileFileDescriptorPortability of I/OOutputOutputting Double-byte CharactersWrapping a WriterMethods of java.io.PrintWriterOther Writer WrappersA Filter to Replace CharsA Class that Uses a FilterSummary of WritersOutputting ASCII Characters and Binary ValuesBasic OutputStream Methodsjava.io.DataOutputStream for Binary Outputjava.io.PrintStream for Printable OutputSystem.in, out, and errWriting a Binary FileOutput Stream WrappersExample of Outputting a Zip FileWriting a Zip ArchiveSummary of Output StreamsInputInputting Double Byte CharactersBasic Reader MethodsAn Input Problem Rears Its Ugly HeadReader WrappersClasses That Wrap ReadersInputting ASCII Characters and Binary ValuesBasic InputStream MethodsMethods of java.io.DataInputStreamA Word About IOExceptionsExampleInput Stream WrappersGZIP Files and StreamsSuggested Use of Input StreamsFurther ReadingExercisesSome Light Relief—The Illegal Prime Number!Converting a Number to Binary and Writing to a File
14. Advanced Input Output
Random Access Fileclass java.io.RandomAccessFileReading from the KeyboardRunning Commands and Getting Output from ThemExecuting the Attrib Command from JavaLimitations on Running ProcessesFormatted String OutputHow Many Digits Are Output?You Can Also Format DatesWriting Objects to DiskSerializing and SecurityXML Support ClassNew I/O PackageMultiplexed Non-blocking Server I/ORecovering from Blocked Server I/OGetting and Using a File ChannelBuffersRead a File Using a Channel and a BufferOther Buffer MethodsView BuffersA Bulk Transfer from a Buffer to an int ArrayMemory Mapped I/OMapped I/O Example import java.io.*;File LockingCharsets and Endian-nessBig-endian StorageLittle-endian storageSupported EncodingsUsing a Specific Character SetByte-Swapping Binary DataSummary of CharsetsExercisesSome Light Relief—The Illegal T-Shirt!
15. Regular Expressions , Collections , Utilities
Regular Expressions and Pattern MatchingMatching a PatternForming PatternsRangeSingle-Character MetacharactersQuantifiersCapturing Groups and Back ReferencesAnchorsAlternationWord NegationMetawordsJava Grep ProgramCollections APIAdding to a Collectionpublic interface IteratorList, LinkedList, and ArrayListComparable and ComparatorThe Collections Helper ClassSet, HashSet, and SortedSetSummary of Collections.Map, HashMap, and TreeMapHashMap Implements MapOther Utility ClassesStackThe java.math APICalendar UtilitiesCalendar and GregorianCalendarOther UtilitiesRandomStringTokenizerObserver and ObservablePropertiesjava.util.PropertiesNote on the Java Native InterfaceFurther ReadingExercisesSome Light Relief—Exchanging Apples and Crays
III. Server-side Java
16. Servlets and JSP
Why Use Servlets?Releases and VersionsInstalling the Tomcat SoftwareRunning the Example ServletsPorts and ProtocolsThe HTML to Invoke a ServletA Servlet and Its Request/responseServlet RequestResponse to a Servlet RequestWriting Your Own ServletKeeping Track of Content LengthServlet Operating Cycle and ThreadingJava Server PagesSecond Example of JSPJava Beans in Servlets and JSPFurther ReadingExercisesSome Light Relief—The Java-Powered Toaster
17. Networking in Java
Everything You Need To Know about TCP/IP but Failed to Learn in KindergartenWhat’s in the Networking Library?TCP/IP Client/Server ModelA Client Socket in JavaSending Email by JavaA Server Socket in JavaSocket ProtocolsRunning the HTTP Server ProgramDebugging SocketsGetting the HTTP CommandHTTP and Web Browsing: Retrieving HTTP PagesHow to Find the IP Address Given to a Machine NameSome Notes on Protocol and Content HandlersHow to Make an Applet Write a File on the ServerThe Linlyn Class for File TransferA Multithreaded HTTP ServerA Mapped I/O HTTP ServerFurther ReadingExercisesSome Light Relief—Using Java to Stuff an Online PollThe Java Votebot
18. Remote Method Invocation
Object SerializationClass VersioningRemote Method InvocationThe Client Side of RMIThe Server Side of RMICreating the Server Stub and SkeletonRunning the RMI ExampleAdding the Client Security ManagerJini SoftwareObject Communication MiddlewareCORBAIDLExercisesSome Light Relief—The Origami Kamikaze Water Bomber
IV. Client Java
19. GUI Basics and Event-Handling
All About Event-HandlingJava Event ModelThe JFrame ExampleTips for Slimming Down Handler CodeMaking a Top-Level Class into a ListenerUsing a Listener Adapter ClassSummary of Event-HandlingExercisesSome Light Relief—The Mouse That Roared
20. All About Applets
Differences Between Applets and Applications and How to Convert Between ThemEmbedding a Java Program in a Web PageThe HTML to Invoke an AppletStarting Applet ExecutionScreen Appearance of an AppletBrowser SummaryPassing Parameters to AppletsBuild in Debugging HelpZip Files and Jar FilesKeep Your Software in a JarRemoving the Contents from a JarJava Web StartHTML Applet TagsExercisesSome Light Relief—Three Fine Applets
21. JFC and the Swing Package
Java Foundation ClassesSome TerminologyOverview of JComponentAll About Controls (JComponents)How to Display ComponentsSwing Threads—A Caution!Swing ComponentsJLabelJButtonJToolTipJTextFieldJCheckBoxJPanelJRadioButton and ButtonGroupJOptionPaneJScrollPaneJTabbedPaneJEditorPaneMore about Swing ComponentsFurther ReadingExercisesSome Light Relief—The Bible Code
22. Containers, Layouts, and AWT Loose Ends
Pluggable Look and FeelAll About ContainersThe Container Class HierarchyWhat’s in a Swing Container?JFrameJPanelApplet and JAppletWindow and JWindowLayout in a ContainerFlowLayoutGrid LayoutBorderLayoutBoxLayoutCombining LayoutsOther Layout ManagersTying up the Loose EndsJDK 1.4 Image I/OThe ToolkitPrinting the ScreenChanging Cursor AppearanceHow to Simulate Multibutton MiceExercisesSome Light Relief—Sky View Cafe: A High Quality Applet
V. Enterprise Java
23. Java Beans in Theory
What Is Component Software?What Is a Java Bean?Properties and EventsCoding Time, Design Time, RuntimeRefresher on EventsBean ConventionsInstall the BeanboxRun a Demo BeanLoading a Bean into the BeanboxCustomizing Bean PropertiesConnecting a Button to a Method in Another BeanActivation Framework and InfobusJava Activation FrameworkInfobusLimitations of BeansEnterprise Java Beans (EJB)Using EJB in an Application ServerEJB SummaryFurther ReadingExercisesSome Light Relief—Furby’s Brain Transplant
24. Java Beans in Practice
The Specification for Two BeansThe Code for the ConverterField BeanProperties of the ConverterField BeanSummary of ConverterField BeanThe Code for DoItButton BeanProperties of the DoItButton BeanCompile, Jar, and Load Classes into BeanboxBeans are Best Carried Around in JarsBean IconsThe Bean Info ClassHow to Write BeanInfoDescriptor ClassesPropertiesDescribing the Properties in a BeanInfo ClassWeird Exception HandlingBack to DescriptorsBound PropertiesPractical Example of a Bound Property: validNumProperty Change Support for Non-Visual BeansSummary: Telling Another Bean About a Change in One of Your ValuesConnecting a Swing Event to a Method in Another BeanEventSet Descriptor CodeHidden StateThe Completed, Integrated Rate CalculatorCustomizing More Complicated PropertiesConstrained PropertiesCalling a Method in Another Bean—Don’t Do It!ExercisesSome Light Relief—Java’s Duke MascotComplete Code ListingsDoItButton.javaDoItButtonBeanInfo.javaConverterField.javaConverterFieldBeanInfo.java
25. Java Security
The SandboxCode SigningThe Security ManagerApplying the Security PolicySigning a Java ProgramStep 1: Setup for Applet Signing (One-Time)Step 2: Put All the Files That Make up the Applet into a Jar FileStep 3: Create a Signed Jar FileStep 4: Change the Applet TagStep 5: The Person Who Runs the Applet Must Import My CertificateStep 6: Set up a Security Policy for the User, Allowing Signed CodeStep 7: Run the Code Using the Policy FileSome Light Relief—Software About NothingFurther References
26. Relational Databases and SQL
Introduction to Relational DatabasesPrimary and Foreign Keys1-Many, Many-Many RelationshipsNormal FormsRelational Database GlossaryBasic SQL PrimerCreating and Populating TablesQuerying and Retrieving DataSubquery SelectionsResult Set of a SELECT QuerySELECT PitfallsUpdating ValuesDeleting Records and TablesSQL Prepared Statements and Stored ProceduresFurther ReadingExercisesSome Light Relief—Reading the Docs
27. JDBC
Downloading and Installing the SoftwareRunning the Example CodeOutput from Running SimpleApplicationDemoConnecting to the DatabaseExecuting SQL StatementsThreads and Database ProgrammingResult SetsCursor SupportBatching SQL Statements and TransactionsTransactionsPrepared Statements and Stored ProceduresComplete ExampleDatabase and Result Set MetadataFurther ReadingExercisesLight Relief—Hear Java Speak! See Java on a PDA!
28. XML and Java
Some Rules of XMLThe Document Type Definition (DTD)What Is XML Used For?XML Versions and GlossaryJAXP Library ContentsReading XML with DOM ParsersA Program That Uses a DOM ParserReading an XML File—SAX ParsersA Program That Uses a SAX ParserThe Factory Design PatternDesign Pattern SummaryOther Java XML NotesDownload and Install the Java XML Software (JAXP)Running the Example CodeFurther ReadingExercisesSome Light Relief—“View Source” on Kevin’s Life
A. Graphics Programming
ColorsFonts and Font MetricsThe Graphics ContextDrawing Text, Lines, and ShapesLoading and Drawing ImagesLoading an Image File in an ApplicationLoading an Image File in an AppletDrawing an Image Onto a Graphics ObjectThe ImageObserver ArgumentImage UpdateThe Media TrackerImage ProcessingDouble BufferingClipping RectanglesTaking Images Apart: java.awt.imageTransparent BackgroundsAnimationSoundsSome Light Relief—Satan: Oscillate My Metallic Sonatas
B. Obsolete Components of the Abstract Window Toolkit
How the Java Abstract Window Toolkit WorksControls, Containers, EventsOverview of ControlsAll About AWT Controls (Components)ButtonCanvasAdapter ClassesCheckboxCheckboxGroupChoiceLabelListScrollbarTextFieldTextAreaMenus: DesignMenu : ClassCheckboxMenuItemPop-up MenusAll About ContainersScrollPaneWindowFramePanelAppletDialogFileDialog
C. Powers of 2 and ISO 8859

Content preview from Just Java™ 2, Fifth Edition

Chapter 21. JFC and the Swing Package

In Chapter 19, we saw that the basic idea behind Java GUI programs is that you:

Declare controls. You can subclass them to add to the behavior, but this is often unnecessary.
Implement an interface to get the event-handler that responds to control activity.
Add the controls to a container. Again, subclassing is possible but frequently unnecessary.

That chapter explained how to handle the events that controls generate. This chapter dives ...

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.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.

Julian F.

Head of Cybersecurity

I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.

Addison B.

Field Engineer

I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.

Amir M.

Data Platform Tech Lead

I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.

Mark W.

Embedded Software Engineer

Publisher Resources

ISBN: 0130320722Purchase book

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design

Business

Soft Skills

Just Java™ 2, Fifth Edition

by Peter van der Linden

Chapter 21. JFC and the Swing Package

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.