JAVA学习过程论文中英文资料对照外文翻译文献Word格式.docx
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JAVA学习过程论文中英文资料对照外文翻译文献Word格式.docx
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Eachperson'
sstudymethodisdifferent,aperson'
smethodsuitsanotherpersonnotnecessarily,Ionlycandiscussownstudymethod.BecauseIstudyJavaamstudyindependentlycompletely,hasnotaskedothers,thereforethestudyprocessbasicallyiscompletelyoneselftriestofindout.Ididnotknowwhetherthismethodisthequitegoodmethod,onlycouldgiveeverybodytoproviderefers.
StudiesJavafirststepinstallsgoodJDK,writesHelloWorld?
ActuallytheJDKstudyisnotsosimple,hastwoquestionsaboutJDKisveryeasytopuzzletheJavaprogrammercontinuouslytheplace:
IstheCLASSPATHquestion,actuallysaidfromtheprinciple,ishowmustmakeclearJREClassLoaderincreaseClass;
Anotherquestionispackageandtheimportquestion,howseeksthekindofwayquestion.Thesetwoquestionstriedtofindoutclear,eliminatedhasstudiedJavaandusesJDKthebiggestbarrier.TherecommendationlookedWangSen"
theJavaDepthExperiencesdangers"
hascarriedonthethoroughdiscussiontothesetwoquestions
SecondstepisstudiesJavathegrammar.TheJavagrammariskindofC++,thebasicallymainstreamprogramminglanguageisnotkindofC,iskindofC++,doesnothavewhatnewthing,thereforethegrammarstudy,probablywasthequiteawhiletimeisenough.Onlyneedstopayattentionishasthekeywordsusagewhichseveralisnoteasytomakeclear,public,protected,private,static,whenuses,whyhastouse,howuses,thispossibleneedsomepeopletodirect,Iinitiallywasownponderovercompletely,hasspenttheverylongtime.ButafterwardsIsawabovethisbookspoketheseconceptsto"
ThinkinginJava"
.
ThirdstepisstudiesJavatheobject-orientedprogramminglanguagecharacteristicplace.Forinstanceinherits,structure,abstractclass,theconnection,themethodaremanycondition,heavyload,cover,Javaexceptionhandlingmechanism.Saidregardinganotobject-orientedlanguagebackgroundpersonthat,Ithoughtthisprocessneedstospendtheverylongverylongtime,becausestudiesinfrontofJavadoesnothaveC++theexperience,onlythentheCexperience,Iwashaveprobablyspentforamonth,allmadeclearonlythenthoroughlytheseconcepts,bookexampleaboverepeatedlyestimating,therevision,theattempt,repeatedlylookedatthatseveralchapterofcontents,looked,lookedhasnotgottendown5,comprehendedonlythenthoroughly.ButIthoughtifhastheC++experience,should12daystimebeenough.Theninthisprocess,mayhavealook"
thisbook,oppositeisextremelythoroughtotheobjectexplanation.WhatapityisIstudies,hasnotseentothisbook,thereforeownhavespentthemassivetime,andestimatesthroughownattemptlearns.
FourthstepstartsafamiliarJavakindofstorehouse.TheJavafoundationclassstorehouseactuallyisJDKinstallsunderthetableofcontentsjre\Lib\Rt.Jarthispackage.Thestudyfoundationclassstorehousestudiesrt.Jar.Insidethefoundationclassstorehousekindareextremelyextremelymany.Itissaidsomemorethan3,000,Ihavenotcounted.Butsaidthemostcoretrulyregardingusonlythen4,respectivelyis
Java.Lang.*;
Java.Io.*;
Java.Util.*;
Java.Sql.*;
Thesefourpackagesstudy,eachpackagestudyallmaywritethickteachingmaterial,butO'
reillyalsotrulyisdoesthis.Ithoughtiftimequitetight,isimpossiblethroughtoreadfourbookstostudy.Ithoughtthequitegoodstudymethodissuch:
Firstmustreadthroughentirepackagetheframe,understoodentirepackageclass,interface,theexceptionconstitution,shouldbetterbecanfindtheintroductionentirepackageframethearticle.Theseintroducedspeciallypackageofbooksthefirstseveralchaptersshouldbetheseoverallframecontentintroductions.Isnotmustbefamiliarwitheachkindofusagetothepackageofoverallframeassurance,whichattributesremembersithave,themethod.Wantstorecordalsocannotremember.Butismustknowwhichaspectsthepackagedoeshaveakindofconstitution,thesekindofusesareany,mostcoreseveralclassificationsmaybecompleteanyfunction.Iinthetimewhichtrainstothehumangenerallyisaclassspeaksapackage,thereforenotimpossibledetailedintroductioneachkindofusage,butIrepeatedlystress,howdoIspeakthesepackagestoyouammusttellyouakindofmethodamtransfer,alsodoesnotrequestyoutorememberthekindofmethodtransfer,butwantsyoutounderstand,whichkindsJavahasprovidedtous,eachkindisusesinanysituation,whenImeetthequestionthetime,Iknewwhichkind,orwhichseveralkindofcombinationscansolvemyproblem,That'
all!
Whenwewritetheprocedurespecificallytime,solongasyouknewwhichkindshouldcompleteyourworkwithtobeenough.Codes,theconcretemethodtransfer,writesthecode,Documentation,allthingsallinsideDocumentation,willnotrequestyoucertainlytoremember,areactualyoualsonottobeabletoremembermorethan3,000kindsaltogetherthenearly100,000methodstransfers.Thereforechangestoeachpackageoverallframeassuranceextremelyimportantly.
Fifthstep,throughabovestudy,ifstudythequitesolidspeech,builttheJavafoundation,isleftovertheworkwhichhadtodoissweepscleaninsideDocumentationbesidesabove4packagesothersomecomparisonstohavetheusethekind.Believedprogressedtothisstep,Javastudiesindependentlytheabilityalreadytoraise,mighttostudyDocumentationdirectlyhorizontal.BesidesmustmaketheGUIprogramming,insideJDKothercanhavetheusethepackageisthese:
Java.Text.*;
Java.Net.*;
Javax.Naming.*;
Thesepackagesofinsiderealcorrectusesquitemanykindsveryareactuallyfew,onlythenseveral,thereforedoesnotneedtospendtheverymuchtime.
Sixthstep,JavaWebprogramming
TheWebprogrammingcoreistheHTTPagreement,theHTTPagreementandJavairrelevant,ifnotfamiliarHTTPagreement,althoughalsomaylearnServlet/JSPprogramming,butcannotachieveextrapolates,byknowingonemethodyouwillknowallboundary.ThereforetheHTTPagreementstudyisnecessary.IfhasbeenfamiliarwithHTTPagreement,alsohadtheJavaprogramminggoodfoundation,studiesServlet/JSPissimplyeasyaspie,IstudyServlet/JSPhasusednottoweek-longtime,thenstartedwithJSPtomaketheproject.InServlet/IntheJSPstudy,heavystillwasServletDocumentation.ServlettheAPImostcommonlyusedkindareveryfew,thefloweredquitefewtimemightgrasp.Thesekindsalllookedat,writesseveralexamplestotry.Servlet/TheJSPprogrammingessenceistransferringthesekindstocomerepeatedlythroughtheHTTPagreementconversesbetweenWebServerandBrower.MoreovertoJSP,butalsoneedstobefamiliarwithseveralcommonlyusedJSPthemark,theconcretemodeofwritingcannotrememberthespeech,looksuptemporarilyandthat'
stheendof.
InadditionJavatheWebprogrammingstudymustplaceWebApplicationwithemphasisinthedesignpattern,howcarriesontheservicelogictheanalysis,andcarriesonthereasonabledesign,accordingtotheMVCdesignpatternrequest,completesthedifferentlogicallevelseparatelyusingServletandJSP,howgraspscarriesontheflowbetweenServletandJSPthecontrolanddatasharing,aswellashowWebshouldApplicationdisposeandthedeployment.
Seventhstep,J2EEprogramming
Theabovestudyprocessifisquitesmooth,carriesontothisstep,thedifficultyenhancessuddenly.Becausetheaboveknowledgecontentallonlyinvolvesanaspect,butlikesEJB,JMS,coretheandsoonJTAJ2EEstandardoftenisseveralkindofJavatechnologysynthesisutilizationcrystallization,thereforegraspsthedifficultyquitetobebig.
FirstcertainlymuststudygoodJNDI,JNDIisApptheServerlocalizationserverresources(theEJBmodule,Datasouce,JMS)searchesthemethod,iftoJNDInotfamiliar,EJB,JMSthesethingscannotstudynearly.JNDIactuallyisjavax.Naming.*Thispackage,utilizesisverysimple.Thedifficultyliesintheserverresourcesdocumentthedisposition.Regardingtheserverresourcesdocumentdisposition,neededtohavealookthespecialdocumentstobestandard,forinstanceweb.Xmlmodeofwriting,ejb-jar.Xmlmodeofwritingandsoon.InviewofeachkindofdifferentAppServer,butalsohasownserviceresourcesdispositiondocument,alsoisneedstobefamiliarwith.
ThenmaystudyJTA,mainlyismustunderstandJTAregardingbusinesscontrolmethod,aswellasshoulduseJTAinanysituation.Heremaysimpleciteanexample,weknewtheordinarycircumstancesmaycarryonbusinessregardingadatabaseconnection(conn.SetAutoCommit(false)....,Conn.Commit()),doesisanatomicoperation,butthesuppositionmyservicedemandisneedstoholdartificiallytotwodifferentdatabasesisanatomicoperation,youcandoto?
AtthistimeonlycoulduseJTA.ThesuppositionoperatingprocessinsertsarecordfirsttowardtheAdatabase,thendeletestheBdatabaseanotherrecord,wewrotethecodearecannotcontrolentireholdartificiallyareanatomicoperation.WiththeJTAspeech,completesthecontrolbyAppServer.
InstudiesinfrontofEJBmuststudytheobjectsequenceandRMI,RMIistheEJBfoundation.ThenstudiesJMSandEJB,saidregardingEJB,mostisessentialismustunderstandhowEJBisrealizesthroughRMItothefar-endobjecttransfer,aswellasmustuseinanysituationtoEJB.
InstudiesEJB,afterJMSthesethings,youpossiblycanrealizemustextremelyanxiouslystudytwodomainstheknowledge,isUML,anotherisDesignPattern.TheJavaenterprisesoftwaredesigntakestheframeextremely(Framework)thedesign,agoodsoftwareframeisthesoftwaredevelopsthesuccessfulessentialc
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