软件设计模式

实验一软件设计模式之工厂模式实验一、实验目的掌握软件设计模式中的工厂模式，能够用工厂模式编写程序，解决实际问题。、实验内容与要求内容：使用工厂模式写一个简单的计算器，能实现加减乘除运算。要求输入两个数，选择运算符，程序便能够计算出结果。程序设计语言可自由选择。要求：需要用“文字+代码+截图”的形式对实验的主要代码和运行结果进行展示和描述。三、实验方法首先设计一个运算类接口■]ProjectV ©G—豪Calculator.imlXQOperatorjavaX号AddOp^raicrrJawaX❹MuiOperatorj,TB|CakulatQr=;\C3lculator.*4publicin±erfaceOperator{►■ridea〃获期结果4■cut1publicdoublegetResult(doublenum!^doublenumi2；TfasrcJQAddOperator}0CacIFe&tJ0DivQperatorQMulOperatarQOperatorQOperatorFactoryQSubOperatcr62.设计运算的实现类:2.1加法实现：jHIProjectt 甜十个一:TI"Cakulatcr=”匚at上uator,* *■」ide■旦1 >■OUtT・wQAddOpevstor存CaclTest0DrvOpcrator0MuiOperator壬Calculatoir.iml 0OptFislior.jiafva AddCp-rrflftoir.java 0MulOperatcrja'i'D:J55C/小法运其publicclassAddOperstorimpleireritsOperatar(^Overridepublicdoublege"tResu1±(daub1enumldoublenum2)freturnnurnl-t-nurmS;9 }❹Operatof8NGQpcrialDfFactDry0SubOpcrotor_Calculater.iml2.2减法实现:

■gQilCUht4Ftosir0SubOperatort!画Projectt ◎壬。—旦匚elulilain「.iml“❷□pdrartcr.jawa❹AddDpe-rator.java MuiDpeiratDr.javatCalculatorR.C^Iculitor1"减半算k■.idej!2publicclassSubOperatorimplenfrentsOperator{t・tUtgOtferridG胃■*0AddOpwator4/publicdoublegetRe&ult'CdoublenumilRdoublefilimS)(&CacITwt'jreturnnuml-num2]0DW)perBtDr)•MulOperdtor了0Gperator}QOperatesFactory2.3乘法实现K]Project■ 备于K]Project■ 备于QTC^kulato-rF:\CalculatorA■.idea►■outT・5F£每AddOpprator(35dTe?tQDivOperator由MulQp^rator❹Opefator蜜DpeiraEDrFactDry0SubOpflretar诅CakulatDr.iml❹Op€^3tor.jsv3 GAddOperatorjava3MulQpeifatDf.jsM'apublicclassMulOperatorimplementsOperator{7gOverride3Ofdpublicdoublege~tResu1±(doub1enumldoublenumi){5T rjatunnnumil^nuniij-7 N}s}FlFlProject■ 金三◎TCailcoOat@ffF;\CakulatorA■.idea卜・<iUt■・wn:QAdd^pe-ratDir0"CadTesiQDivOperatorQMulOpe*ator•OperatorQOp^ratorFactury❹SubOp«rator*Calculator,imllllliEirternfllLitwariesScrakhesandConsoles2.4除法实现『C^lculatDr.innJ。Dperatarjava缶AddDperdtor.java③IMulOpe-rator.java//除法publicclassDivOpenatarinplem-enitsOperator{^OverridepublicdoublegetIResult{doub1eniurttiJdoublenum2){5 * /7判断除割(是否为空if(num2l=0){returnnunil/nuiwZjSA }else(System.叫t.println("除敖.不能为矿)ji10 return&;}12Q}3.编写主函数并实现culatnr.iml Operatorjava@Add□ptrater.java @IMulDpcraftor.ja^a 0口peratorfartery.java 同CadTeiTt.java0IDivOp«rator.jatfai-iiitpor^tjava»wti1„Scanner;iimportjavaHuti1.regex..Psttern;publicclsssCaclTest{publicstaticvoidmain(String[]args){System,out.println( ~字：')；Scannerscjonier=new5canner(System.in)]Stringniumi=scanner»mextLine();Systera.outBprintln(rii#输入运点符(+-*/)：")jStringoper=ecanneramextLine();System,outBprintln("请输入第二十数字z")jStringnum2=scanner-nextLine()j〃偷过工厂荻取运算类Operatoraperator=OperatorFactory.fOper-ff^QJ™(oper)j；if(operator!=null){if(1sfkn/bte(muml)&&hDau机<?(脚砒)){doubleresult=operator.getResult(Dduble.p£?rseDD£jbte(nijml)Dcuub1e./aarsettouble())-System.a-Lft.println(H结果:1,1+resuit)-}else{System..out■一prdn±In(“请墙入正确的散字!">J}}}/，腕折洋W的【doubleftifloaTJprivatestaticbooleanisDoub1e(Stringstr){if(null==str||""-equals(str)){returnfalsej}Patternpafttem=Pattern.contpiLe(n,A[6-9]+(.[&-9]-i-)?>");//SlT,包括壁数和猝点I'eturnpatterri.niatcher(51r)Tn*atclies();}四、实验结果1.加法减法乘法Rut亘CadTfrsr。*卞-<C:s\ProgramFiles.\Java\jdkl.8i.0_lBl\.bin\ja!-，a•exe"…■请输入第一个数字：二ig运林［+-，：#请输A策二个敖字：=9kProcessfinisbedw