事业单位人员招考聘考务管理系统英文中文译文Word下载.docx
- 文档编号:22075952
- 上传时间:2023-02-02
- 格式:DOCX
- 页数:18
- 大小:28.40KB
事业单位人员招考聘考务管理系统英文中文译文Word下载.docx
《事业单位人员招考聘考务管理系统英文中文译文Word下载.docx》由会员分享,可在线阅读,更多相关《事业单位人员招考聘考务管理系统英文中文译文Word下载.docx(18页珍藏版)》请在冰豆网上搜索。
multithreaded,forhighperformanceinapplicationsthatneedtoperformmultipleconcurrentactivities,suchasmultimedia;
andinterpreted,formaximumportabilityanddynamiccapabilities.
Together,theaboverequirementscomprisequiteacollectionofbuzzwords,solet’sexaminesomeofthemandtheirrespectivebenefitsbeforegoingon.
What’scompletelynewisthemannerinwhichJavaanditsrun-timesystemhavecombinedthemtoproduceaflexibleandpowerfulprogrammingsystem..
DevelopingyourapplicationsusingJavaresultsinsoftwarethatisportableacrossmultiplemachinearchitectures,operatingsystems,andgraphicaluserinterfaces,secure,andhighperformance,WithJava,yourjobasasoftwaredeveloperismucheasier—youfocusyourfullattentionontheendgoalofshippinginnovativeproductsontime,basedonthesolidfoundationofJava.Thebetterwaytodevelopsoftwareishere,now,broughttoyoubytheJavalanguageplatform.
VerydynamiclanguageslikeLisp,TCL,andSmallTalkareoftenusedforprototyping.Oneofthereasonsfortheirsuccessatthisisthattheyareveryrobust—youdon’thavetoworryaboutfreeingorcorruptingmemory.
Similarly,programmerscanberelativelyfearlessaboutdealingwithmemorywhenprogramminginJava,Thegarbagecollectionsystemmakestheprogrammer’sjobvastlyeasier;
withtheburdenofmemorymanagementtakenofftheprogrammer’sshoulders,storageallocationerrorsgoaway.AnotherreasoncommonlygiventhatlanguageslikeLisp,TCL,andSmallTalkaregoodforprototypingisthattheydon’trequireyoutopindowndecisionsearlyon—theselanguagesaresemanticallyrich.
Javahasexactlytheoppositeproperty:
itforcesyoutomakeexplicitchoices.Alongwiththesechoicescomealotofassistance—youcanwritemethodinvocationsand,ifyougetsomethingwrong,yougettoldaboutitatcompiletime.Youdon’thavetoworryaboutmethodinvocationerror.
TheJavabeginnermustgraspthefollowingbasicconcepts
Basicconcept
1.InOOPtheonlyrelationsiswhattheobject’sinterface,suchasthecomputersellerheleavesaloneinternalstructureofelectricalsource,butheisonlyconcernedaboutthatwhetherthepowerwillbesuppliedtoyou,alsosolongasknowcanornotbutisnothowandwhy.Allproceduresaremakeupofcertainattributeandthebehaviorobject,thedifferentobjectvisitinvokesthroughthefunctioninvocation,betweentheobjectallintercommunionareinvokethroughthemethodinvocation,Byobjectdataencapsulation,enhancesreuserateverymuch..
2.InOOPthemostimportantthoughtisclass,theclassisthetemplate,isablueprint,constructanobjectfromaclass,namelyconstructaninstanceoftheclass.
3.Encapsulation:
isthatcombinesthedataandthebehaviorinapackage)andhidesthedatatherealizationprocesstotheobjectuser,inanobjectdataiscalleditsinstancefield.
4.Throughexpandsaclasstoobtainanewclassiscalledinheritance,butallclassesareconstructedbytheobjectsuperrootclassofexpansion,superrootclassofasfollowscanmaketheintroduction.
5.Object3principalcharacteristics
Behavior---explainedthisobjectcanmakewhat.
Tate---whentheobjectexertsthemethodobjectreflection.
Dentity---andothersimilarbehaviorobjectsdiscriminationsymbols.
Eachobjecthasonlyindentityandamongthreecharacteristicstheyaffectmutually.
6.Relationsamongclasses:
Use-a:
Dependentrelation
Has-a:
Polymerizationrelation
Is-a:
inheritorrelation--example:
AclasshasinheritedBclass,thistimeAclassnotonlyhasBclassofmethod,butalsohasitsownmethod(Individualityexistsingeneralcharacter)
7.Structureobjectusestructure:
Structureproposing,thestructureisonespecialmethod,thestructureobjectandtoitsinitialization.
Example:
ADataclassofstructurecallsData
NewData()---structureanewobject,alsoinitializecurrenttime.
Datahappyday=newData()---anobjectevaluatesanvariablehappyday,thusenablesthisobjecttobeusedmanytimes,herebestatedthecausevariableandtheobjectvariablearedifferent.
Newreturnsthevalueisaquotation.
Constructorcharacteristic:
Theconstructormayhave0,oneormanyparameters
Theconstructorandtheclasshavethesamename
Aclassmayhavemanyconstructor.Theconstructorhasnotreturnedvalue
Theconstructoralwaysbetogetherusedwiththenewoperator
8.Overloading:
Whenmanymethodshavethesamenamewhenincludesthedifferentparameter,thenhastheoverloadingWhichmethoddoesthecompilerhavetochooseinvokes.
9.Package:
Javaallowoneormanyclassestobecometogetherasgroup,iscalledpackage,toorganizingdutyeasily,thestandardJavastorehousedividesintomanypackagesJava.Langjava.Utiljava,netandsoon,thepackageislayeredandalljavapackagesareinjavaandinajavaxpackage.
10.Extendablethought:
permittoconstructnewclassonexistingclasses,whenyouextendtheclasswhichalreadyexisted,thenyoureusethisclassofmethodandthefield,atthesametimeyoumightaddthenewmethodandthefieldinthenewclass.
11.Expandableclass:
Theexpandableclassfullymanifestedis-atoextendtherelationsTheformis:
Class(subclass)extends(baseclass).
12.Multi-modality:
Injava,theobjectvariableismulti-modalityButinjavadoesnotsupportmultipleextend.
13.Dynamiccombine:
themechanismofinvokingobjectmethodmechanism.
1)compilerexaminesobjectstatementtypeandmethodname.
2)thecompilerexaminesthatmethodinvokesparametertype.
3)staticcombine:
Ifthemethodtypeispriavtestaticthefinal,compilercanaccuratelyknowwhichmethodshouldinvoke.
4)whentheprocedurerunsandusesdynamiccombinetoinvokeamethod,themethodeditionwhichthenhypothesizedmachinemustinvokextheobjectactualtypewhichaimsattomatch.
5)dynamiccombine:
isaveryimportantcharacteristic,itcancausetheproceduretochangeagainmayexpandbutdoesnotneedtotranslatehassavedthecode.
14.Finalclass:
Inordertopreventotherpeoplederivethenewclassfromyoursclass,thisclassiscannotexpanded.
15.Thedynamicinvocationspendlongertimethanthestaticinvocationexpenditure.
16.Abstractclass:
Stipulatedormanyabstractmethodsclassofitselfmustdefineisabstract.
Example:
PublicabstractstringgetDescripition
17.InJavaeachclassisbeextendedbyobjectclass.
18.equalandtoStringmethodinobjectclass.
Equalusesintestinganobjectiswhetherequalwithanotherobject.
ToStringreturnstorepresentthisobjectthestringofcharacter,eachclasscannearlyoverloadingthismethod,inordertoreturnstothecurrentconditionthecorrectexpression.
(ThetoStringmethodisaveryimportantmethod)
19.Generalprogramming:
Anyclassoftypeallvaluesallmayreplacewithaobjectclassofvariable.
20.Thearraytabulates:
TheArrayListdynamicarraytabulates,isaclassofstorehouse,definesinjava.Inuitlpackage,butautomaticcontrolarraysize.
21.inclassandclassofobject,getclassmethodreturnstotheclasstypeanexample,whentheprocedurestartcontainscanincreaseinthemainmethodclass,hypothesizedconfidentialincreaseallclasseswhichheneeds,eachincreaseclassallmustincreasetheclasswhichitneeds.
22.Theclass:
classmightdynamicoperatethejavacodeforthecompilationtheproceduretoprovidetheformidablefunctionreflection,thisfunctionwasJavaBeansisspeciallyuseful,theusereflectedJavatobeabletosupporttheVBprogrammertobefamiliarwiththeusethetool.
p
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 事业单位 人员 招考 聘考务 管理 系统 英文 中文 译文