1、java課程設(shè)計(jì)計(jì)算器的設(shè)計(jì)與實(shí)現(xiàn)java課程設(shè)計(jì)計(jì)算器的設(shè)計(jì)與實(shí)現(xiàn)15/15java課程設(shè)計(jì)計(jì)算器的設(shè)計(jì)與實(shí)現(xiàn)淮海工學(xué)院計(jì)算機(jī)工程學(xué)院課程設(shè)計(jì)報(bào)告設(shè)計(jì)名稱：面向?qū)ο笳n程設(shè)計(jì)選題名稱：計(jì)算器的設(shè)計(jì)與實(shí)現(xiàn)姓名：學(xué)號：專業(yè)班級：系（院）：計(jì)算機(jī)工程學(xué)院設(shè)計(jì)時間：設(shè)計(jì)地址：軟件實(shí)驗(yàn)室、教室指導(dǎo)教師考語：成績：署名：年月日面向?qū)ο笳n程設(shè)計(jì)報(bào)告第2頁，共15頁1課程設(shè)計(jì)目的面向?qū)ο蟪绦蛟O(shè)計(jì)是一門實(shí)踐性很強(qiáng)的計(jì)算機(jī)專業(yè)基礎(chǔ)課程，課程設(shè)計(jì)是學(xué)習(xí)完該課程后進(jìn)行的一次較全面的綜合練習(xí)。其目的在于經(jīng)過實(shí)踐加深學(xué)生對面向?qū)ο蟪绦蛟O(shè)計(jì)的理論、方法和基礎(chǔ)知識的理解，掌握使用Java語言進(jìn)行面向?qū)ο笤O(shè)計(jì)的基本方法，提升運(yùn)

2、用面向?qū)ο笾R剖析實(shí)質(zhì)問題、解決實(shí)質(zhì)問題的能力。2課程設(shè)計(jì)任務(wù)與要求：課程設(shè)計(jì)可采納NetBeans、Eclipse、JBuilder等作為開發(fā)平臺以提升開發(fā)效率，盡可能嫻熟掌握此中一種集成開發(fā)環(huán)境。建議采納UML建模技術(shù)進(jìn)行系統(tǒng)的剖析設(shè)計(jì)，在Visio中畫出系統(tǒng)用例圖和類圖，并將UML圖復(fù)制到設(shè)計(jì)報(bào)告中。經(jīng)過此次設(shè)計(jì)，要求掌握以下內(nèi)容：1）面向?qū)ο蠹夹g(shù)中的繼承與多態(tài)（重載和覆蓋）體制、各樣修飾符的使用2）類、包、接口的定義與使用3）常用工具類與算法的實(shí)現(xiàn)（數(shù)組、向量、字符串、鏈表）4）Java常用標(biāo)準(zhǔn)GUI組件及其事件辦理5）Java的異樣辦理體制6）Java的數(shù)據(jù)庫連結(jié)技術(shù)7）Java的多

3、線程技術(shù)與動畫制作8）Java的網(wǎng)絡(luò)編程3課程設(shè)計(jì)說明書面向?qū)ο笳n程設(shè)計(jì)報(bào)告第3頁，共15頁、需求剖析（用例圖）計(jì)算器加減乘除階乘正弦用戶余弦歷史查驗(yàn)清空歷史圖1.用例圖課題：計(jì)算器的設(shè)計(jì)與實(shí)現(xiàn)功能剖析：此計(jì)算器有連續(xù)運(yùn)算的功能，但是在好多人使用計(jì)算器時簡單忘記從前是用8*2呢仍是6*2，于是這個計(jì)算器多出歷史查驗(yàn)的功能，能夠?qū)那暗氖阶语@示在下方，一邊查驗(yàn)正確與否。2、綱要設(shè)計(jì)MultipleOperation類，用來實(shí)現(xiàn)連續(xù)運(yùn)算的類MultipleOperationtrans:String+operation(expr:String)Listl類,用來記錄歷史的類面向?qū)ο笳n程設(shè)計(jì)報(bào)告第4頁

4、，共15頁listStr:StringEstr:Stringflag:String+toString()3詳盡設(shè)計(jì)MultipleOperationtrans:String+operation(expr:String)publicclassMultipleOperationStringtrans;publicvoidoperation(Stringexpr)ScriptEngineManagermanager=newScriptEngineManager();ScriptEngineengine=manager.getEngineByName(js);trytrans=String.value

5、Of(engine.eval(expr);catch(Exceptione)trans=錯誤語法;System.out.println(e);listStr:StringEstr:Stringflag:String+toString()publicclasslist面向?qū)ο笳n程設(shè)計(jì)報(bào)告第5頁，共15頁StringStr;StringEstr;Stringflag;publiclist()Str=;Estr=;flag=;OverridepublicStringtoString()/returnA+F+B+D+C;returnStr+=+Estr;4編程實(shí)現(xiàn)packageCalculator;i

6、mportjava.awt.event.*;importjavax.swing.*;importjava.util.*;intClearNumber=1;/判斷點(diǎn)擊“=”后點(diǎn)擊數(shù)字按鈕重置文本框intI=0;/用來加入列表第一行的提示intflag=0;/點(diǎn)擊列表后提取結(jié)果的判斷源judgeju;privatebooleannumber=true;privateStringequalOp=;privateCalculatorOpop=newCalculatorOp();MultipleOperationCalcuOperation;listhistory;Vectordata=newVecto

7、r();ActionListenernumberListener=newNumberListener();/*classNumberListenerimplementsActionListenerpublicvoidactionPerformed(ActionEventevent)Stringdigit=event.getActionCommand();if(number)textfield.setText(digit);number=false;elsetextfield.setText(textfield.getText()+digit);面向?qū)ο笳n程設(shè)計(jì)報(bào)告第6頁，共15頁*Action

8、ListeneroperatorListener=newOperatorListener();privatevoidaction()number=true;textfield.setText();*equalOp=;op.setTotal(0);*classOperatorListenerimplementsActionListenerpublicvoidactionPerformed(ActionEvente)if(number)action();textfield.setText(0);elsenumber=true;StringdisplayText=textfield.getText(

9、);if(equalOp.equals(=)op.A();op.setTotal(displayText);history.D=;*elseif(equalOp.equals(+)op.add(displayText);op.B();history.F=+;elseif(equalOp.equals(-)op.subtract(displayText);op.B();history.F=-;*elseif(equalOp.equals()op.multiply(displayText);op.B();history.F=;*elseif(equalOp.equals()op.divide(di

10、splayText);op.B();history.F=;elseif(equalOp.equals(N)op.B();history.F=;intA;intB;inttrans=1;StringC;面向?qū)ο笳n程設(shè)計(jì)報(bào)告A=Integer.parseInt(history.A);B=Integer.parseInt(history.B);op.B();*for(inti=0;iB;i+)trans*=A;op.power(String.valueOf(trans);textfield.setText(+op.getTotalString();equalOp=e.getActionCommand

11、();*/publicclassjudgepublicvoidpan()if(ClearNumber=0)textfield.setText();/*publicclassCalculatorOp*privatedoubletotal;publicCalculatorOp()total=0;publicStringgetTotalString()return+total;publicvoidsetTotal(Stringn)total=convertToNumber(n);publicvoidadd(Stringn)total+=convertToNumber(n);publicvoidsub

12、tract(Stringn)total-=convertToNumber(n);publicvoidmultiply(Stringn)total*=convertToNumber(n);*publicvoiddivide(Stringn)total/=convertToNumber(n);第7頁，共15頁面向?qū)ο笳n程設(shè)計(jì)報(bào)告第8頁，共15頁publicvoidpower(Stringn)total=convertToNumber(n);*publicvoidA()history.A=textfield.getText();publicvoidB()history.B=textfield.get

13、Text();*privatedoubleconvertToNumber(Stringn)returnDouble.parseDouble(n);*/*CreatesnewformNewJFrame*/publicNewJFrame()initComponents();history=newlist();textfield.setText(null);CalcuOperation=newMultipleOperation();ju=newjudge();this.setLocationRelativeTo(null);this.setResizable(false);privatevoidbt

14、nPointActionPerformed(java.awt.event.ActionEventevt)textfield.setText(textfield.getText()+.);privatevoidbtnClearActionPerformed(java.awt.event.ActionEventevt)textfield.setText(textfield.getText().substring(0,textfield.getText().length()-1);privatevoidbtnEqual1ActionPerformed(java.awt.event.ActionEve

15、ntevt)textfield.setText();面向?qū)ο笳n程設(shè)計(jì)報(bào)告第9頁，共15頁privatevoidjButton1ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+1);privatevoidjButton2ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+2

16、);privatevoidjButton3ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+3);privatevoidjButton4ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+4);privatevoidjButton5ActionPerformed(java.

17、awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+5);privatevoidjButton6ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+6);privatevoidjButton7ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNum

18、ber=1;textfield.setText(textfield.getText()+7);面向?qū)ο笳n程設(shè)計(jì)報(bào)告第10頁，共15頁privatevoidjButton8ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+8);privatevoidjButton9ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText

19、(textfield.getText()+9);privatevoidjButton10ActionPerformed(java.awt.event.ActionEventevt)ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+0);privatevoidbtnAddActionPerformed(java.awt.event.ActionEventevt)textfield.setText(textfield.getText()+);ClearNumber=1;privatevoidbtnSubtractActionP

20、erformed(java.awt.event.ActionEventevt)textfield.setText(textfield.getText()+-);ClearNumber=1;privatevoidbtnMultiplyActionPerformed(java.awt.event.ActionEventevt)ClearNumber=1;textfield.setText(textfield.getText()+*);privatevoidbtnDivideActionPerformed(java.awt.event.ActionEventevt)textfield.setText

21、(textfield.getText()+/);ClearNumber=1;privatevoidbtnEqualActionPerformed(java.awt.event.ActionEventevt)CalcuOperation;Stringstrans=;history.Str=textfield.getText();面向?qū)ο笳n程設(shè)計(jì)報(bào)告第11頁，共15頁CalcuOperation.operation(textfield.getText();textfield.setText(CalcuOperation.trans);history.Estr=CalcuOperation.tran

22、s;strans=history.Str+=+history.Estr;if(I=0&textfield.getText()!=null)data.addElement(歷史記錄以下：);I=1;if(CalcuOperation.trans=錯誤語法)ClearNumber=0;elsedata.addElement(strans);jlist.setListData(data);textfield.setText(CalcuOperation.trans);ClearNumber=0;privatevoidbtnBrackets1ActionPerformed(java.awt.event

23、.ActionEventevt)textfield.setText(textfield.getText()+();privatevoidbtnBrackets2ActionPerformed(java.awt.event.ActionEventevt)textfield.setText(textfield.getText()+);privatevoidjlistValueChanged(javax.swing.event.ListSelectionEventevt)history.flag=String.valueOf(jlist.getSelectedValue();textfield.se

24、tText(history.flag.substring(history.flag.indexOf(=)+1,history.flag.length();ClearNumber=1;flag=1;privatevoidjButton11ActionPerformed(java.awt.event.ActionEventevt)if(ClearNumber=0|flag=1)Stringa=textfield.getText().substring(0,textfield.getText().indexOf(.);textfield.setText(變換為二進(jìn)制為：+String.valueOf

25、(Integer.toBinaryString(Integer.parseInt(a);elseif(textfield.getText().indexOf(.)!=-1)Stringa=textfield.getText().substring(0,textfield.getText().indexOf(.);textfield.setText(變換為二進(jìn)制為：面向?qū)ο笳n程設(shè)計(jì)報(bào)告第12頁，共15頁+String.valueOf(Integer.toBinaryString(Integer.parseInt(a);elsetextfield.setText(變換為二進(jìn)制為：+String.v

26、alueOf(Integer.toBinaryString(Integer.parseInt(textfield.getText();ClearNumber=0;privatevoidjButton12ActionPerformed(java.awt.event.ActionEventevt)if(ClearNumber=0)Stringa=textfield.getText().substring(0,textfield.getText().indexOf(.);textfield.setText(變換為八進(jìn)制為：+String.valueOf(Integer.toOctalString(I

27、nteger.parseInt(a);elseif(textfield.getText().indexOf(.)!=-1)Stringa=textfield.getText().substring(0,textfield.getText().indexOf(.);textfield.setText(變換為八進(jìn)制為：+String.valueOf(Integer.toOctalString(Integer.parseInt(a);elsetextfield.setText(變換為八進(jìn)制為：+String.valueOf(Integer.toOctalString(Integer.parseInt(textfield.getText();ClearNumber=0;privatevoidjButton13ActionPerformed(java.awt.event.ActionEventevt)if(ClearNumber=0)Stringa=textfield.getText().substring(0,textfield.getText().length()-2);textfield.setText(變換為十六進(jìn)制為：+String.valueOf(Integer.toHexString(Integer.parseInt(a);elseif(textfield.getTex