4外文翻译模板

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1、大连交通大学2011届本科生毕业设计（论文）外文翻译ThinkinJavaByBruceEckelSource:http://www.MindView.net1.EverythingIsanObjectAlthoughitisbasedonC++,Javaismoreofa“pure”object-orientedlanguage.BothC++andJavaarehybridlanguages,butinJavathedesignersfeltthatthehybridizationwasnotasimportantasitwasinC++.Ahybridl

2、anguageallowsmultipleprogrammingstyles;thereasonC++ishybridistosupportbackwardcompatibilitywiththeClanguage.BecauseC++isasupersetoftheClanguage,itincludesmanyofthatlanguage’sundesirablefeatures,whichcanmakesomeaspectsofC++overlycomplicated.TheJavalanguageassumesthatyouwanttodoonlyob

3、ject-orientedprogramming.Thismeansthatbeforeyoucanbeginyoumustshiftyourmindsetintoanobject-orientedworld(unlessit’salreadythere).ThebenefitofthisinitialeffortistheabilitytoprograminalanguagethatissimplertolearnandtousethanmanyotherOOPlanguages.Inthischapteryou’llseethebasiccomponent

4、sofaJavaprogramandlearnthat(almost)everythinginJavaisanobject.2.YoumanipulateobjectswithreferencesEachprogramminglanguagehasitsownmeansofmanipulatingelementsinmemory.Sometimestheprogrammermustbeconstantlyawareofwhattypeofmanipulationisgoingon.Areyoumanipulatingtheelementdirectly,ora

5、reyoudealingwithsomekindofindirectrepresentation(apointerinCorC++)thatmustbetreatedwithaspecialsyntax?AllthisissimplifiedinJava.Youtreateverythingasanobject,usingasingleconsistentsyntax.Althoughyoutreateverythingasanobject,theidentifieryoumanipulateisactuallya“reference”toanobject.1

6、Youmightimagineatelevision(theobject)andaremotecontrol(thereference).Aslongasyou’reholdingthisreference,youhaveaconnectiontothetelevision,butwhensomeonesays,“Changethechannel”or“Lowerthevolume,”whatyou’remanipulatingisthereference,whichinturnmodifiestheobject.Ifyouwanttomovearoundth

7、eroomandstillcontrolthetelevision,youtaketheremote/referencewithyou,notthetelevision.Also,theremotecontrolcanstandonitsown,withnotelevision.Thatis,justbecauseyouhaveareferencedoesn’tmeanthere’snecessarilyanobjectconnectedtoit.Soifyouwanttoholdawordorsentence,youcreateaStringreferenc

8、e:Strings;11大连交通大学2