Java Application Development on Linux Java Applica

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详细说明： Java Application Development on Linux xxiPreface .......................................................................................................... xxviiIntroduction ................................................................................................... 1Getting Started ......................................................PART I 3An Embarrassment of Riches: The Linux Environment ............Chapter 1 3What You Will Learn ...........................................................................1.1 4The Co mmand Line: What’s the Big Deal? ........................................1.2 5Basic Linux Concepts and Commands ...............................................1.3 6Redirecting I/O .......................................................................1.3.1 9The ls Command ...................................................................1.3.2 9Filenames ..............................................................................1.3.3 10Permissions ...........................................................................1.3.4 12File Copying ...........................................................................1.3.5 13Seeing Stars ..........................................................................1.3.6 15File Contents ..........................................................................1.3.7 19The grep Command ..............................................................1.3.8 vii Contentsviii 20The find Command ................................................................1.3.9 21The Shell Revisited ................................................................1.3.10 26The tar and zip Commands ...................................................1.3.11 29The man Command ...............................................................1.3.12 30Review ................................................................................................1.4 30What You Still Don’t Know ..................................................................1.5 30Resources ..........................................................................................1.6 33An Embarrassment of Riches: Editors .......................................Chapter 2 33What You Will Learn ...........................................................................2.1 34Eye to Eye with vi ...............................................................................2.2 40Exiting ....................................................................................2.2.1 41Search and Replace ..............................................................2.2.2 43The Joy of Regular Expressions ............................................2.2.3 44Starting Off Right: .exrc .....................................................2.2.4 45Editors Galore .....................................................................................2.3 47Editing Your Pipes (sed, the Stream EDitor) .........................2.3.1 47Simple Graphical Editors .......................................................2.3.2 49Review ................................................................................................2.4 49What You Still Don’t Know ..................................................................2.5 49Resources ..........................................................................................2.6 51An Experienced Programmer’s Introduction to Java ................Chapter 3 51What You Will Learn ...........................................................................3.1 52Fundamental Language Elements ......................................................3.2 53Scalar Types ..........................................................................3.2.1 57Object Types ..........................................................................3.2.2 65Statements .............................................................................3.2.3 74Error Handling, Java Style .....................................................3.2.4 78print(), println(), printf() ...............................3.2.5 82Using (and Making) Java APIs ...........................................................3.3 82The package Statement .....................................................3.3.1 84The import Statement .......................................................3.3.2 85Encapsulation, Inheritance, and Polymorphism .................................3.4 85Encapsulation ........................................................................3.4.1 3.4.2 ixContents 91Polymorphism ........................................................................3.4.3 93O, Templates! Where Art Thou? .........................................................3.5 94Virtually Final ......................................................................................3.6 95A Useful Simple Application ...............................................................3.7 95Review ................................................................................................3.8 97What You Still Don’t Know ..................................................................3.9 97Resources ..........................................................................................3.10 98Exercises ............................................................................................3.11 99Where Am I? Execution Context ..................................................Chapter 4 100What You Will Learn ...........................................................................4.1 100A Simple Start .....................................................................................4.2 100Command-Line Arguments ....................................................4.2.1 102Unit Testing Made Easy .........................................................4.2.2 102The System Class ...........................................................................4.3 102Java and Standard I/O ...........................................................4.3.1 104Environment Variables ...........................................................4.3.2 105Java and Environment Variables ...........................................4.3.3 109The Properties Class .................................................................4.4 111The Runtime Class .........................................................................4.5 111exec() ................................................................................4.5.1 113Portability ...............................................................................4.5.2 113Review ................................................................................................4.6 113What You Still Don’t Know ..................................................................4.7 114Resources ..........................................................................................4.8 115The Sun Microsystems Java Software Development Kit ...........Chapter 5 116What You Will Learn ...........................................................................5.1 116All You Need, and Not One Thing More .............................................5.2 117The Java Compiler .............................................................................5.3 117Compiler Behavior, Defaults, and Environment Variables .....5.3.1 119javac Options .........................................................................5.3.2 121The Java Runtime Engine ..................................................................5.4 121The Basics .............................................................................5.4.1 122java Options ...........................................................................5.4.2 5.5 Contents 123Running javadoc ...................................................................5.5.1 124Javadoc Command-Line Options ...........................................5.5.2 128Javadoc Comments ...............................................................5.5.3 131Dispensing with Applets .....................................................................5.6 132Going Native .......................................................................................5.7 137Introducing RMI ..................................................................................5.8 137A Brief Introduction to RMI .....................................................5.8.1 143The rmic Tool ........................................................................5.8.2 144The rmiregistry Tool .............................................................5.8.3 144Setting Up Servers and Clients ..............................................5.8.4 147RMI Summary ........................................................................5.8.5 148The Java Debugger ............................................................................5.9 157Return to the Source: The Java Decompiler ......................................5.10 157Bundling a Java Program: Put It in a JAR ..........................................5.11 160Deploying Applications ...........................................................5.11.1 163Basic jar Operation ................................................................5.11.2 164The Rest of the Toolkit .......................................................................5.12 166Review ................................................................................................5.13 166What You Still Don’t Know ..................................................................5.14 166Resources ..........................................................................................5.15 167The IBM Developer Kit for Linux, Java 2 Technology Edition ...Chapter 6 167What You Will Learn ...........................................................................6.1 Use Linux Features to Make Multiple Java SDKs Play Nicely6.2 168Together ............................................................................................. 168Links .......................................................................................6.2.1 173Switching Java Versions by Symlink ......................................6.2.2 174How the IBM JDK Differs from the Sun JDK ......................................6.3 175Performance ..........................................................................6.3.1 175Differences in the Commands ................................................6.3.2 175IBM Classes ...........................................................................6.3.3 176What Are All These “_g” Versions? ....................................................6.4 176Review ................................................................................................6.5 177What You Still Don’t Know ..................................................................6.6 6.7 xi 179The GNU Compiler for Java (gcj) .................................................Chapter 7 179What You Will Learn ...........................................................................7.1 179A Brand GNU Way .............................................................................7.2 180The GNU Compiler Collection ............................................................7.3 181Compiling Our Simple Application with gcj ........................................7.4 182Compiling FetchURL with gcj ................................................7.4.1 184Compiling a Multiclass Program ............................................7.4.2 185Options and Switches .........................................................................7.5 186Reasons to Use gcj ............................................................................7.6 187Reasons Not to Use gcj .....................................................................7.7 187Review ................................................................................................7.8 187What You Still Don’t Know ..................................................................7.9 188Resources ..........................................................................................7.10 189Know What You Have: CVS ..........................................................Chapter 8 190What You Will Learn ...........................................................................8.1 190Source Control: Whys and Hows ........................................................8.2 193Setup ......................................................................................8.2.1 195Import .....................................................................................8.2.2 198Normal Use ............................................................................8.2.3 201Update ...................................................................................8.2.4 201Merges ...................................................................................8.2.5 203Log .........................................................................................8.2.6 cvs status ......................................................................8.2.7 205 205cvs tag ..............................................................................8.2.8 207Branching Tags ......................................................................8.2.9 210cvs export ......................................................................8.2.10 210A Quick Look behind the Scenes ...........................................8.2.11 211A GUI: jCVS ........................................................................................8.3 211Installing jCVS ........................................................................8.3.1 213Review ................................................................................................8.4 214What You Still Don’t Know ..................................................................8.5 8.6 Contents 215Ant: An Introduction .....................................................................Chapter 9 215What You Will Learn ...........................................................................9.1 216The Need for a Different Build Tool ....................................................9.2 217Obtaining and Installing Ant ................................................................9.3 217Installing a Binary Tarball .......................................................9.3.1 219Installing a Source Tarball .....................................................9.3.2 220A Sample Ant Buildfile ........................................................................9.4 220XML for the Uninitiated ..........................................................9.4.1 222The Buildfile Tags ..................................................................9.4.2 229A Real, Live Buildfile ..............................................................9.4.3 232Review ................................................................................................9.5 232What You Still Don’t Know ..................................................................9.6 232Resources ..........................................................................................9.7 235Integrated Development Environments ......................................Chapter 10 236What You Will Learn ...........................................................................10.1 236NetBeans: The Open Source IDE ......................................................10.2 236A Brief History of NetBeans ...................................................10.2.1 237Installing NetBeans ................................................................10.2.2 241Getting Around in NetBeans ..................................................10.2.3 245Integration with CVS ..............................................................10.2.4 248Integration with Ant ................................................................10.2.5 250Other Add-on Tools ................................................................10.2.6 251SunONE Studio Community Edition ...................................................10.3 251Eclipse: The Source of SWT ..............................................................10.4 251Selecting and Installing Eclipse .............................................10.4.1 254Using Eclipse for a New Project .............................................10.4.2 256Using Eclipse for an Existing Project .....................................10.4.3 257Working with Eclipse ..............................................................10.4.4 258Review ................................................................................................10.5 259What You Still Don’t Know ..................................................................10.6 10.7 xiiiContents 261Developing Business Logic .................................PART II 263Balancing Acts: An Imaginary Scenario .....................................Chapter 11 263What You Will Learn ...........................................................................11.1 264Statement of the Need ........................................................................11.2 264How to Develop Software ...................................................................11.3 267What Makes a Good Requirement .....................................................11.4 268Whom to Ask for Requirements ..........................................................11.5 269Requirements for the Budget Application ...........................................11.6 A.M. ......................................................11.6.1 269Monday Morning, 10 272Back at His Desk ....................................................................11.6.2 272Documenting, Prototyping, and Stakeholder Buy-In ...........................11.7 272Documenting ..........................................................................11.7.1 274Stakeholder Buy-In ................................................................11.7.2 275Prototyping .............................................................................11.7.3 276Review ................................................................................................11.8 276What You Still Don’t Know ..................................................................11.9 276Resources ..........................................................................................11.10 277Exercises ............................................................................................11.11 279Analysis and Design: Seeking the Objects ................................Chapter 12 279What You Will Learn ...........................................................................12.1 280Facing the Blank Page .......................................................................12.2 280Using CRC Cards ...............................................................................12.3 280Finding the Objects .............................................................................12.4 283Finding the Methods and Attributes ....................................................12.5 284Essential and Nonessential ................................................................12.6 287Analysis Paralysis ...............................................................................12.7 288Real Software Engineering .................................................................12.8 289Core Classes ......................................................................................12.9 289Review ................................................................................................12.10 289What You Still Don’t Know ..................................................................12.11 289Resources ..........................................................................................12.12 12.13 Contentsxiv 295JUnit: Automating Unit Testing ...................................................Chapter 13 295What You Will Learn ...........................................................................13.1 296JUnit: Why All the Fuss? ....................................................................13.2 296Design Then Test Then Code ............................................................13.3 297Installing and Running JUnit ...............................................................13.4 299Downloading and Unzipping ..................................................13.4.1 301Using JUnit .............................................................................13.4.2 303Writing Test Cases .............................................................................13.5 306JUnit Assertions .....................................................................13.5.1 308Running a Test Case .............................................................13.5.2 309Running Test Suites ...........................................................................13.6 312Review ................................................................................................13.7 312What You Still Don’t Know ..................................................................13.8 313Resources ..........................................................................................13.9 313Exercises ............................................................................................13.10 315Storing the Data ............................................................................Chapter 14 315What You Will Learn ...........................................................................14.1 316Follow the Objects ..............................................................................14.2 316Of Persistence ....................................................................................14.3 316Thinking of the Future, or Painting in Corners ....................................14.4 316Oracle, PostgreSQL, MySQL .............................................................14.5 317MySQL ...................................................................................14.5.1 317PostgreSQL ...........................................................................14.5.2 318Oracle ....................................................................................14.5.3 318Selection Criteria ....................................................................14.5.4 318Being Self-Contained ..........................................................................14.6 319Beyond the Basics ..............................................................................14.7 322Persistence Is Not the Whole Story ....................................................14.8 322Setting Up PostgreSQL for BudgetPro ...............................................14.9 322Installing PostgreSQL ............................................................14.9.1 postgres User .................................................14.9.2 323Creating a 324Creating Our Database ..........................................................14.9.3 325Straight JDBC ........................................................................14.9.4 14.10 xv 326What You Still Don’t Know ..................................................................14.11 326Resources ..........................................................................................14.12 326Exercises ............................................................................................14.13 327Accessing the Data: An Introduction to JDBC ...........................Chapter 15 327What You Will Learn ...........................................................................15.1 328Introducing JDBC ...............................................................................15.2 329Making Connections ...........................................................................15.3 332Downloading JDBC for MySQL ..............................................15.3.1 332Querying Data ....................................................................................15.4 334Getting Results ...................................................................................15.5 336Updates, Inserts, Deletes ...................................................................15.6 336Review ................................................................................................15.7 336What You Still Don’t Know ..................................................................15.8 337Resources ..........................................................................................15.9 338Exercises ............................................................................................15.10 339Developing Graphical User Interfaces ................PART III Getting in the Swing of Things: Designing a GUI forChapter 16 341BudgetPro ...................................................................................... 341What You Will Learn ...........................................................................16.1 342A Simple Swing Program ....................................................................16.2 343Stompin’ at the Savoy, or The Swing Paradigm .................................16.3 345Slow, Slow, Quick-Quick, Slow: The Basic Swing Objects .................16.4 347Layout Managers ................................................................................16.5 348Beyond Arthur Murray: Actions, Listeners, Events .............................16.6 348Getting Down to Cases: Designing a GUI for BudgetPro ...................16.7 350Overview ................................................................................16.7.1 352Creating Pieces ......................................................................16.7.2 373Review ................................................................................................16.8 374What You Still Don’t Know ..................................................................16.9 375Resources ..........................................................................................16.10 16.11 Contents 377Other Ways: Alternatives to Swing .............................................Chapter 17 377What You Will Learn ...........................................................................17.1 378The IBM SWT Toolkit .........................................................................17.2 378Another GUI Toolkit. Why? ....................................................17.2.1 379Duplicated Effort. Why Cover It? ............................................17.2.2 380Portability: Better and Worse ..................................................17.2.3 380The Rest of the Chapter .........................................................17.2.4 380SWT: Close to the Metal ........................................................17.2.5 381“Hello, world” SWT Style ........................................................17.2.6 384Porting BudgetPro to SWT .................................................................17.3 387Step 1: Convert the Class Members ......................................17.3.1 389Step 2: Converting the main() Method ..............................17.3.2 Step 3: Converting the GUI build() and init()17.3.3 391Methods ................................................................................. 394Completing the Conversion of the BudgetPro Class ........17.3.4 395Completing the Conversion of the Application .......................17.3.5 395Closing Thoughts ...................................................................17.3.6 396SWT and gcj ......................................................................................17.4 398Review ................................................................................................17.5 398What You Still Don’t Know ..................................................................17.6 398Resources ..........................................................................................17.7 399Exercises ............................................................................................17.8 401Developing Web Interfaces ..................................PART IV 403Servlets: Java Pressed into Service ............................................Chapter 18 403What You Will Learn ...........................................................................18.1 404Servlets: Program-Centric Server-Side Documents ...........................18.2 405Perspective .........................................................................................18.3 407How to Write a Servlet ........................................................................18.4 411Input, Output .......................................................................................18.5 Matters of State: Cookies, Hidden Variables, and the Dreaded18.6 413“Back” Button ...................................................................................... 414Cookies ..................................................................................18.6.1 18.7 xvii 416Prototype ................................................................................18.7.1 417Design ....................................................................................18.7.2 420Review ................................................................................................18.8 420What You Still Don’t Know ..................................................................18.9 421Resources ..........................................................................................18.10 421Exercises ............................................................................................18.11 423JSP: Servlets Turned Inside Out .................................................Chapter 19 424What You Will Learn ...........................................................................19.1 424Servlets Turned Inside Out: JSP ........................................................19.2 426How to Write a JSP Application ..........................................................19.3 427Scriptlet ..................................................................................19.3.1 429Declaration .............................................................................19.3.2 430Expression .............................................................................19.3.3 431Directive .................................................................................19.3.4 434New Syntax ............................................................................19.3.5 434JavaBeans in JSP ..................................................................19.3.6 437Tag Libraries ..........................................................................19.3.7 438Using JSP with BudgetPro .................................................................19.4 439Review ................................................................................................19.5 440What You Still Don’t Know ..................................................................19.6 440Resources ..........................................................................................19.7 441Exercises ............................................................................................19.8 443Open Source Web Application Servers ......................................Chapter 20 443What You Will Learn ...........................................................................20.1 444Downloading JBoss ............................................................................20.2 444Be an Enabler, or “Let’s Be Codependent!” ........................................20.3 445Nonroot-Installed Software ....................................................20.3.1 450Finer Grained Control ............................................................20.3.2 450Installing JBoss ...................................................................................20.4 451Things That Make It Go ......................................................................20.5 451System V Init System .............................................................20.5.1 458RedHat/Fedora chkconfig ....................................................20.5.2 463Other Distributions .................................................................20.5.3 20.5.4 Contentsxviii 464Disposition of Forces ..........................................................................20.6 464Apache Geronimo ...............................................................................20.7 467Installing Geronimo .............................................................................20.8 468Running the Geronimo Server ............................................................20.9 468Review ................................................................................................20.10 469What You Still Don’t Know ..................................................................20.11 469Resources ..........................................................................................20.12 471Developing Enterprise Scale Software ...............PART V 473Introduction to Enterprise JavaBeans ........................................Chapter 21 473What You Will Learn ...........................................................................21.1 473Expanding to EJBs .............................................................................21.2 474EJB Concepts ........................................................................21.2.1 477Bean Types ............................................................................21.2.2 482Under the Hood ......................................................................21.2.3 482What’s in a Name? An Introduction to JNDI .......................................21.3 482Naming and Directory System Concepts ...............................21.3.1 484Common Directory Services ..................................................21.3.2 487Putting a Face to a Name: JNDI ............................................21.3.3 491Using JNDI with JBoss ...........................................................21.3.4 491Review ................................................................................................21.4 492What You Still Don’t Know ..................................................................21.5 492Resources ..........................................................................................21.6 493Building an EJB .............................................................................Chapter 22 493What You Will Learn ...........................................................................22.1 493EJBs: You Don’t Know Beans? ..........................................................22.2 495SessionBean ....................................................................22.2.1 497EJBObject .........................................................................22.2.2 498EJBHome ..............................................................................22.2.3 499Summarizing the Pieces ........................................................22.2.4 499EJBLocalHome and EJBLocalObject ......................22.2.5 501Compiling Your Beans ...........................................................22.2.6 22.3 xix 502What You Still Don’t Know ..................................................................22.4 503Resources ..........................................................................................22.5 505Deploying EJBs .............................................................................Chapter 23 505What You Will Learn ...........................................................................23.1 506Lend Me Your EAR: Enterprise Packaging and Deployment .............23.2 508What’s in an EJB-JAR File .....................................................23.2.1 511Using Our Bean .....................................................................23.2.2 512Packaging the Servlet ............................................................23.2.3 514Deploying the EAR .............................................................................23.3 515JBoss .....................................................................................23.3.1 515Geronimo ...............................................................................23.3.2 516Maintaining a Distributed Application .................................................23.4 516Ant and CVS ..........................................................................23.4.1 517XDoclet ..................................................................................23.4.2 518Abstracting Legacy Applications .........................................................23.5 518Review ................................................................................................23.6 519What You Still Don’t Know ..................................................................23.7 519Resources ..........................................................................................23.8 521Parting Shots .................................................................................Chapter 24 521The Future’s So Bright, I Squint and Look Confused .........................24.1 522Our Book Is Yours ..............................................................................24.2 522Came the Revolution ..........................................................................24.3 523What You Still Don’t Know ..................................................................24.4 523Resources ..........................................................................................24.5 525ASCII Chart ....................................................................................Appendix A 527A Java Swing GUI for BudgetPro ................................................Appendix B 539GNU General Public License ........................................................Appendix C 549Index ............................................................................................................. ...展开收缩

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