JAVA编程思想英语参考文献与翻译
时间：2016-11-15 14:44来源：毕业论文
java基于c，但它是更纯的面向对象语言
“If we spoke a different language，wewouldperceiveasomewhatdifferentworld .”3670
Although it is based on C，Javaismoreofa「pure”对象-定向语言。
Both C and Java are hybrid languages， butinjavathedesignersfeltthatthehybridizationwasnotasimportantasitwasinc.ahybridlanguagealllage thereasoncishybridistosupportage HEC language.becausecisasupersetoftheclanguage，itincludesmanyofthatlanguage’sundesirablefeatures，whichcanmakesomesomeaspectore
thejavalanguageassumesthatyouwanttodoonlyobject-oriented programming.thismeansthatbeforeyoucanbeginyoumuststshiftyourmindsetiourmindsetindsetititetitiion . thebenefitofthisinitialeffortistheabilitytoprograminalanguagethatissimplertolearnandtousethanmanyotheroooplanguages.in this 在Java is an对象中进行mponentsofajavaprogramandlearnthat (almost ) everything。
youmanipulateobjectswithreferences
eachprogramminglanguagehasitsownmeansofmanipulatingelementsinmemory.sometimestheprogrammermustbeconstantlyawareofwhatypeofmory umanipulatingtheelementdirectly，orareyoudealingwithsomekindofindirectrepresentation (apointerincorc
allthisissimplifiedinjava.youtreateverythingasanobject， usingasingleconsistentsyntax.althoughyoutreateverythingasanobject theidentifieryoumanipulateisactuallya“reference”ton objjobja anda远程控制(the reference ).aslong asyou’reholdingthisreference，youhaveaconnectiontothetelevision， butwhensomeone“changethechannel”or“lowerthevolume，”what you’remanipulatingisthereference， whichinturnmodifiestheobject.ifyouwanttomovearoundtheroomandstillcontrolthetelevision，youtaketheremote/reference with you
Also，theremotecontrolcanstandonitsown，with no television. That is， justbecauseyouhaveareferencedoesn’tmeanthere’snecessarilyanobjectconnectedtoit.soifyouwanttoholdawordorsence，youcrecrecte
字符串s；
uther eyou’vecreatedonlythereference，not an object.ifyoudecidedtosendamessagetosatthispoint， you’llgetanerrorbecausesisn’tactuallyattachedtoanything (there’SnO television ).A safer practice，then，isAlwaystoinition
字符串s=' asdf '；
However，thisusesaspecialjavafeature 3360 stringscanbeinitializedwithquotedtext.normaly，youmustuseamoregeneraltypeofinitititition
You must create all the objects
When you create a reference，youwanttoconnectitwithanewobject.you doso，in general，withthenewoperator.thekeywordnewsays，“
strings=新字符串(asdf )；
notonlydoesthismean makemeanewstring，butitalsogivesinformationabouthowtomakethestringbysupplyinganinitialcharacterstring
Of course， javacomeswithaplethoraofready-madetypesinadditiontostring.what’smoreimportantisthatyoucancreateyourowntypes.what’sthat ntalactivityinJavaprogramming，and it’s what you’llbelearningaboutintherestofthisbook。
where存储生命
it’susefultovisualizesomeaspectsofhowthingsarelaidoutwhiletheprogramisrunning—inparticularhowmemoryisarranged.there a refidouthed 0Java编程思想英语参考文献与翻译：http://www.lw free.com/fanyi/lunwen _ 71.html
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