1、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(hào)：專業(yè)班級(jí)：系（院）：計(jì)算機(jī)工程學(xué)院設(shè)計(jì)時(shí)間：設(shè)計(jì)地點(diǎn)：軟件實(shí)驗(yàn)室、教室指導(dǎo)教師評(píng)語：成績：簽名：年 月 日1 .課程設(shè)計(jì)目的.面面對(duì)象程序浚訐*一嵬二仃類蹶性五強(qiáng)而訐算機(jī)專業(yè)篁砒廉程；諫程浚訐而苧牙憑孩諫程后迸行的二次一較全面的綜合練習(xí)。其目的在于通過實(shí)踐加深學(xué)生對(duì)面向?qū)ο蟪绦蛟O(shè)計(jì)的理論、方法和基礎(chǔ)知識(shí)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，提高運(yùn)用面向?qū)ο笾R(shí)分析實(shí)際問題、解決實(shí)際問題的能力。2 .課程設(shè)計(jì)任務(wù)與要求：課程設(shè)計(jì)可選用NetBeans、Eclipse、

2、JBuilder等作為開發(fā)平臺(tái)以提高開發(fā)效率，盡可能 熟練掌握其中一種集成開發(fā)環(huán)境。建議采用UMLS模技術(shù)進(jìn)行系統(tǒng)的分析設(shè)計(jì)，在 Visio中畫出系統(tǒng)用例圖和類圖，并將UMLH復(fù)制到設(shè)計(jì)報(bào)告中。通過這次設(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）機(jī)制、各種修飾符的使用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組件及其事件處理5） Java的異常處理機(jī)制6） Java的數(shù)據(jù)庫連接技術(shù)7） Java的多線程技術(shù)與動(dòng)畫制作8） Java的網(wǎng)絡(luò)編程3.課程設(shè)計(jì)說明書1、需求分析（用例圖）圖1.用例圖課題：計(jì)算器

3、的設(shè)計(jì)與實(shí)現(xiàn)8*2功能分析：此計(jì)算器有連續(xù)運(yùn)算的功能，然而在很多人使用計(jì)算器時(shí)容易忘掉之前是用 呢還是6*2,于是這個(gè)計(jì)算器多出歷史檢驗(yàn)的功能，可以將以前的式子顯示在下方，一邊檢驗(yàn) 正確與否。2、概要設(shè)計(jì)MultipleOperation 類，用來實(shí)現(xiàn)連續(xù)運(yùn)算的類MultipleOperation trans : String+operation(expr ：String )Listl類，用來記錄歷史的類listStr: StringEstr: String flag: String +toString ()3.詳細(xì)設(shè)計(jì)MultipleOperationtrans : String+opera

4、tionString )(expr:public class Multipleoperation String trans;public void operation(String expr)ScriptEngineManager manager=new ScriptEngineManager();ScriptEngine engine =manager.getEngineByName("js");trytrans= String.valueOf( engine.eval(expr);catch(Exception e)trans=" 錯(cuò)誤語法"Syst

5、em.out.println(e);listStr:String Estr: String flag: String+toString ()public class list String Str;String Estr;String flag;public list()Str=""Estr=”"；flag=""Overridepublic String toString ()/return A+F+B+D+C;return Str+"="+Estr;4.編程實(shí)現(xiàn)package Calculator;import java.

6、awt.event.*;import javax.swing.*;import java.util.*;public class NewJFrame extends javax.swing.JFrame int ClearNumber=1;/判定點(diǎn)擊“="后點(diǎn)擊數(shù)字按鈕重置文本框int I=0;/ 用來加入列表第一行的提示int flag=0;點(diǎn)擊列表后提取結(jié)果的判定源judge ju;private boolean number = true;private String equalOp ="="/ private CalculatorOp op = new C

7、alculatorOp();MultipleOperation CalcuOperation;list history;Vector<String> data=new Vector<String>();/ ActionListener numberListener = new NumberListener();/* class NumberListener implements ActionListener * public void actionPerformed(ActionEvent event) * String digit = event.getActionC

8、ommand();* if (number) * textfield.setText(digit);* number = false;* else * textfield.setText(textfield.getText() + digit);* * * * ActionListener operatorListener = new OperatorListener();* private void action()* number = true;* texfield.setText("");* equalOp ="="* op.setTotal(&q

9、uot;0");* * class OperatorListener implements ActionListener * public void actionPerformed(ActionEvent e) * if (number) * action();* textfield.setText("0");* else * number = true;* String displayText = textfield.getText();* if (equalOp.equals("=")* op.A();* op.setTotal(displ

10、ayText);* history.D="="* else if (equalOp.equals("+") * op.add(displayText);* op.B();* history.F="+"* else if (equalOp.equals("-") * op.subtract(displayText);* op.B();* history.F="-"* else if (equalOp.equals(" x") * op.multiply(displayText)

11、;* op.B();* history.F=" x"* else if (equalOp.equals(" +") * op.divide(displayText);* op.B();* history.F=" +"* else if (equalOp.equals("AN") * op.B()；* history.F="A"；* int A;* int B;* int trans=1;* String C;* A=Integer.parseInt(history.A);* B=Integer.

12、parseInt(history.B);* op.B()；* for(int i=0;i<B;i+) * trans *=A;* * op.power(String.valueOf(trans);* * texfield.setText("" + op.getTotalString();* equalOp = e.getActionCommand();* * * */public class judgepublic void pan()if(ClearNumber=0) textfield.setText("");/*public class Ca

13、lculatorOp * private double total;* public CalculatorOp() * total = 0;* * public String getTotalString() * return ""+total;* * public void setTotal(String n) * total = convertToNumber(n);* * public void add(String n) * total += convertToNumber(n);* * public void subtract(String n) * total

14、-= convertToNumber(n);* * public void multiply(String n) * total *= convertToNumber(n);* * public void divide(String n) * total /= convertToNumber(n);* * public void power (String n) * total = convertToNumber(n);* * public void A()* history.A=textfield.getText();* * public void B()* history.B=textfi

15、eld.getText();* * private double convertToNumber(String n) * return Double.parseDouble(n);* * */ /* Creates new form NewJFrame*/public NewJFrame() initComponents(); history=new list();textfield.setText(null);CalcuOperation=new MultipleOperation(); ju=new judge();this.setLocationRelativeTo(null); thi

16、s.setResizable(false);private void btnPointActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+".");private void btnClearActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText().substring(O,textfield.getText().length()-1);priva

17、te void btnEqual1ActionPerformed(java.awt.event.ActionEvent evt) textfield.setText("");private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+"1");private void jButton2ActionPerformed(java.awt.event.Action

18、Event evt) ju.pan()；ClearNumber=1;textfield.setText(textfield.getText()+"2");private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) ju.pan()；ClearNumber=1;textfield.setText(textfield.getText()+"3");private void jButton4ActionPerformed(java.awt.event.ActionEvent evt)

19、 ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+"4");private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+"5");private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) ju.pan();

20、ClearNumber=1;textfield.setText(textfield.getText()+"6");private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) ju.pan();ClearNumber=1;textfield.setText(textfield.getText()+"7");private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) ju.pan()；ClearNumbe

21、r=1;textfield.setText(textfield.getText()+"8");private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) ju.pan()；ClearNumber=1;textfield.setText(textfield.getText()+"9");private void jButton10ActionPerformed(java.awt.event.ActionEvent evt) ju.pan()；ClearNumber=1;textf

22、ield.setText(textfield.getText()+"0");private void btnAddActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+"+");ClearNumber=1;private void btnSubtractActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+"-&

23、quot;);ClearNumber=1;private void btnMultiplyActionPerformed(java.awt.event.ActionEvent evt) ClearNumber=1;textfield.setText(textfield.getText()+"*");private void btnDivideActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+"/");ClearNumber=1;pri

24、vate void btnEqualActionPerformed(java.awt.event.ActionEvent evt) / CalcuOperation;String strans=""history.Str=textfield.getText();CalcuOperation.operation(textfield.getText();textfield.setText(CalcuOperation.trans);history.Estr=CalcuOperation.trans; strans=history.Str+"="+histor

25、y.Estr;if(I=0&&textfield.getText()!=null) data.addElement("歷史記錄如下：")；I=1; if(CalcuOperation.trans="錯(cuò)誤語法")ClearNumber=0; else data.addElement(strans); jlist.setListData(data); textfield.setText(CalcuOperation.trans); ClearNumber=0; private void btnBrackets1ActionPerformed(

26、java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+"(");private void btnBrackets2ActionPerformed(java.awt.event.ActionEvent evt) textfield.setText(textfield.getText()+")");private void jlistValueChanged(javax.swing.event.ListSelectionEvent evt) history.flag=Str

27、ing.valueOf(jlist.getSelectedValue();textfield.setText( history.flag.substring(history.flag.indexOf("=")+1,history.flag.length(); ClearNumber=1;flag=1;private void jButton11ActionPerformed(java.awt.event.ActionEvent evt) if(ClearNumber=0|flag=1) String a=textfield.getText().substring(0, te

28、xtfield.getText().indexOf("."); textfield.setText("轉(zhuǎn)換為二進(jìn)制為：”+String.valueOf(Integer.toBinaryString(Integer.parseInt(a);else if(textfield.getText().indexOf(".")!=-1)String a=textfield.getText().substring(0, texfield.getText().indexOf(".");textfield.setText("轉(zhuǎn)換為

29、二進(jìn)制為：”+String.valueOf(Integer.toBinaryString(Integer.parseInt(a);elsetextfield.setText("轉(zhuǎn)換為二進(jìn)制為：”+String.valueOf(Integer.toBinaryString(Integer.parseInt(texfield.getText();ClearNumber=0;private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) if(ClearNumber=0) String a=textfield.ge

30、tText().substring(0, textfield.getText().indexOf(".");textfield.setText("轉(zhuǎn)換為八進(jìn)制為：”+String.valueOf(Integer.toOctalString(Integer.parseInt(a);else if(textfield.getText().indexOf(".")!=-1)String a =textfield.getText().substring(0, textfield.getText().indexOf(".");text

31、field.setText("轉(zhuǎn)換為八進(jìn)制為：”+String.valueOf(Integer.toOctalString(Integer.parseInt(a);elsetextfield.setText("轉(zhuǎn)換為八進(jìn)制為：”+String.valueOf(Integer.toOctalString(nteger.parseInt(textfield.getText();ClearNumber=0;private void jButton13ActionPerformed(java.awt.event.ActionEvent evt) if(ClearNumber=0)

32、String a=textfield.getText().substring(0, textfield.getText().length()-2);textfield.setText("轉(zhuǎn)換為十六進(jìn)制為：”+String.valueOf(Integer.toHexString(Integer.parseInt(a)else if(textfield.getText().indexOf(".")!=-1)String a =textfield.getText().substring(0, textfield.getText().indexOf(".");textfield.setText("轉(zhuǎn)換為十六進(jìn)制為：”+String.valueOf(Integer.toHexString(Integer.parseInt(a)elsetextfield.setText(+String.va