2023年武漢理工Java實(shí)驗(yàn)報(bào)告

學(xué)生學(xué)號(hào)實(shí)驗(yàn)課成績(jī)武漢理工大學(xué)

學(xué)生實(shí)驗(yàn)報(bào)告書課程名稱JAVA語言程序設(shè)計(jì)開課學(xué)院計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院指導(dǎo)老師學(xué)生姓名專業(yè)班級(jí)20232023學(xué)年第一學(xué)期實(shí)驗(yàn)課程名稱:JAVA語言程序設(shè)計(jì)實(shí)驗(yàn)項(xiàng)目名稱類和對(duì)象實(shí)驗(yàn)成績(jī)實(shí)驗(yàn)者專業(yè)班級(jí)組別同組者實(shí)驗(yàn)日期2023年10月2日第一部分:實(shí)驗(yàn)分析與設(shè)計(jì)(可加頁)一、實(shí)驗(yàn)內(nèi)容描述(問題域描述).編寫一個(gè)抽象的二維幾何體接口Geometricinterface,其中定義求周長(zhǎng)和求面積方法，再編寫三角形類其實(shí)現(xiàn)Geomelricinierface接口，有三個(gè)邊長(zhǎng)屬性,編寫矩形類繼承Ge。metricinterface接口，有長(zhǎng)和寬屬性。規(guī)定輸入相關(guān)屬性值后，可以求得相應(yīng)的周長(zhǎng)值和面積值。附：求三角形面積s=\/p(p-a){p-b)(p-c)其中a,b,c分別為三角形三邊長(zhǎng),p為半周長(zhǎng)，S為三角形的面積。.使用面向?qū)ο蟮乃枷刖帉懹?jì)算器，改善第一次實(shí)驗(yàn)的第4題，實(shí)現(xiàn)加、減、乘、除操作。其中涉及一個(gè)運(yùn)算抽象類Operation和各個(gè)運(yùn)算的實(shí)現(xiàn)。規(guī)定：(D使用封裝；(2)使用繼承；(3)使用多態(tài)。(4)實(shí)現(xiàn)表達(dá)式的加、減、乘、除運(yùn)算。計(jì)算：“3+(5*6-4)”實(shí)現(xiàn)思緒：1)創(chuàng)建抽象類Operati。n及其子運(yùn)算類；2)運(yùn)用數(shù)據(jù)結(jié)構(gòu)堆棧的思想,解析表達(dá)式；(選做，假如不能實(shí)現(xiàn)可以定義成員變量運(yùn)算數(shù)l(numA)和運(yùn)算數(shù)2(numB))3)編寫測(cè)試類TestCa1c進(jìn)行驗(yàn)證。二、實(shí)驗(yàn)內(nèi)容與設(shè)計(jì)思想1./*幾何*/(1)/*三角形類*/publicclassTriangleimplementsGeomlnterface(doublea,b,c;。〃構(gòu)造方法?Triangle(intxjnty,intz)°{°a=x；ob=y；。箋二z;。}?！ㄇ笾荛L(zhǎng)publievoidperimeter()USystem.ou/.print1n("三角形的周長(zhǎng)為"+(a+b+c))；)“/求面積叩ubIicvoidarea()(oodoublep=(a+b+c)/2;doubleS;S=Math.sgrr(p*(p-a)*(p-b)*(p-c))；?System,om.primln("三角形的面積為"+S);°l(2)長(zhǎng)方形類類似三角形類，略。/*接口*/interfaccGeomInterface{voidperimeter();voidarea();)/(主函數(shù)*/pub1icclassmian{publicstaticvoidmain(String[]args){a//TODOAuto—generatedmethodstub。Squares=newSquare(4.5);訂rianglet=newTriangle(3,4,5)；.perimeter();area()；“l(fā).perimeter();area();°)}.計(jì)算器(l)importjava.utiLScanner;classopcrator{aprivatecharch;operator1ast;operalornext;^publicvoidsetCh(charx){ch=x;)publicchargetCh(){returnch;})abstractc1assOperation{edoublenum1,num2,rcsu1t;fabstractdoublegetResuIt();}classOperationaddextendsOperation{叩ublieOperationadd(doub1ea,doubleb){TODOAuto—gencratedconstructorstub?nunil=a；num2=b;)doublegetResu1t(){oreturnnuml+num2:I)classOperationsubextendsOperation{^public0peralionsub(doublea,doub1eb){?！═ODOAuto-generatedconstructorstubum1=a;num2=b;°)?doub1egetResult(){areturnnuml-num2;I)classOperationmu1extendsOperation{pub1icOperalionmul(doublea,doub1eb){。//TODOAuto-generatedconstructorstubnuml=a；num2=b；0，doublegetResult(){。returnnuml*num2；))classOperationdivextendsOperation{叩ublic0perationdiv(doublea,doubleb){。//TODOAuto—generatedconstructorstubnuml=a;nuni2=b;°}。doub1egetRcsult(){returnnuml/num2；))publieclassDemo2{staticintjudge(charchi,charch2){0if(chl=='+'){。switch(ch2){~caseodooretum-1；°?...defau1t：。brcak：TOC\o"1-5"\h\z00|00}if(chl==/){。?switch(ch2){8...°}.if(ch1=='*'){gswitch(ch2){，if(ch1=—'/'){^switch(ch2){0O...00}01?if(ch1=='('){aif(ch2==')'){return2;aa}else{wooreturnI;OOfrO)000}°if(ch1==')'){oreturn0;00|if(chl==,#'){，switch(ch2){oreturn0;°lpublicstaticvoidmain(String[]args){o//TODOAuto-generatedmethods(ubSystem,out.print1n("請(qǐng)輸入一個(gè)以一結(jié)尾的表達(dá)式：");Seannerscanner=ne\vSeanncr(System,in);。Stringstr=scanner.next();??if(str.charAt(str.1ength()-1)!=35){System.out.println("輸入錯(cuò)誤!");return;}aintflag1=O,flag2=0,f1ag3=0;numbernuml=nu11,nuin2=nu11;numbcrfirstnum=ncwnumber。；?firstnum.setA(0)；operatorfirstoperator=newoperator()；ofirstoperator.setCh('#')；^operatoropl=firstoperator,op2=null;?for(inti=0;i<str.length();i++){aharch=str.charAt(i);。，if(chV58&&ch>47){Mif(flag2==0){aif(firstnum.getA()==0){。firstnum.setA(ch-48)；a。onuml=firstnum；。oag2=1;。}else{。。wonum2=newnumber()；。。&num2.setA(ch-48);。。。。flag2=1;)。g}e1se{aum2.setA(num2.getA()*10+(ch-48));。wf]ag2=1;aoo)。o?}else{。gflag2=0；<?sop2=newoperator();K)p2.setCh(ch);3gflagl=judge(opl.getCh(),op2.getCh());。。gswitch(flag1){ooocase-1：{。oswitch(op1.gctCh()){◎ggcase'+':{。onum1.setA(newOperationadd(num1.getA(),nurn2.getA()).getResu11());。。。gop2=null：。。num2=nu11;°。wooopl=opl.last;O8i--；8abreak;}。ocase{a。numl.seiA(newOperationsub(numI.gelA(),num2.getA()).getResult());000

000000000。0000。0p1.setCh(ch)；。a&num2=nu11；3Mosaop1=op1.last;TOC\o"1-5"\h\z。?i—;0003os,obrcak；},gcase'*{。。。?nuni1.setA(newOperationmul(numl.getA(),num2.getA()).getResult());g。a。opl.setCh(ch)：?。op2=nul1；a?num2=nuli;，<>op1=opl.last;000j?*goa。obreak;)g。case'/{num1.setA(ncwOpcrationdiv(num1.getA(),num2,ge(A()).getResuit());ooooMoopl.setCh(ch);op2=nu1I;s。。num2=nu11；g。a$opl=op1.last;TOC\o"1-5"\h\z88&01；\o"CurrentDocument"023。break；I00o}g?break;}case1:卜pl.next=op2；ex。。op2.1ast=op1：◎。op1=op2;TOC\o"1-5"\h\z。。?if(num2!=nu11){。。^numl.next=num2;az。。num2.last=num1：sg。。num1=num2;M0)?break;。。2case2:{0°...。。break;00}。case0:{TOC\o"1-5"\h\zg3...。^break;amo}g?case-2:{0000...3brcak;aoo|00|(2)/*number*/packagejava實(shí)驗(yàn)2;classnumber{Aprivatedoublea;numberlast；numbernext;publicvoidsctA(doublcx)ga二x;)publicdoublegetA()Cr