Java保存計算過程的計算器

目錄1.需求分析................................................................................................................12.概要設(shè)計................................................................................................................23.詳細設(shè)計................................................................................................................43.1UML圖....................................................................................................................43.2類設(shè)計圖……………………..........74.主要程序?qū)崿F(xiàn)......................................................................................................155.測試與結(jié)果..........................................................................................................226.心得體會..............................................................................................................25參考文獻.....................................................................................................................251.需求分析引子1.掌握JAVA語言編程的基礎(chǔ)知識并能熟練運用。2.熟悉類聲明與對象的使用。3.理解委托時間處理模型。4.了解JAVA語言的圖形用戶界面JAVASWING的設(shè)計知識。5.運用Eclipse編寫簡單計算器程序，并實現(xiàn)其功能。1.按下數(shù)字鍵在文本框上會顯示數(shù)字，這是計算器最基本的功能2.在任何時候按下“+-”鍵，計算器文本框上的數(shù)字置反3.右邊一個文本框顯示計算過程，上面一個文本框顯示輸入的數(shù)字運算符號以及兩個數(shù)之間的運算結(jié)果。5.按下清除“C”鍵，數(shù)據(jù)被全部清除。JDK，Eclipse12.概要設(shè)計一、功能圖：單擊運單擊復制按鈕復制文本區(qū)的內(nèi)容到剪貼板單擊清除按鈕清除文本區(qū)中的全部內(nèi)容單擊保存按鈕將計算結(jié)果保存到文件算數(shù)算符2二、系統(tǒng)流程圖33.詳細設(shè)計圖4CalculatorWindow類ActonListemerJFrame::圖的圖5類JButotn1*::--1圖3.2NumberButton類的UML圖類JButotn1*::-12圖3.3OperationButton類的UML圖類1*-resultShow-1-2:圖3.4HandleDigit類的UML圖6類*1:圖3.5HandleOperation類的UML圖類*1-list:圖3.6HandleDot類的UML圖類*1-list:圖3.7HandlePOrN類的UML圖7類*1:圖3.8HandleEquality類的UML圖類*1-list:圖3.9HandleSin類的UML圖類*1-list:圖3.10HandleBack類的UML圖8類*1-list:圖3.11HandleClear類的UML圖類CalculatorWindowFunctionsaveButtoncopyButtonclearButtonActionEventInPut:無OutPut:無Return:空Function:InPut:無OutPut:無Return:空StaticvoidMain()FunctonInPutOutPutReturn無補充說明9類StringgetOperationSignFunctionInPut:無OperationButtonFunction:OperationButtonInPut:SOutPut:無Return:空無無補充說明類HandleDigitFunction：處理listInPut:無OutPut:無Return:空HandleDigitFunction:HandleDigitInPut:t1t2OutPut:無Return:空無補充說明10類HandleOperationVoidactionPerformed()Function：處理listInPut:無OutPut:無Return:空HandleOperationFunction:HandleOperationtInPut:t1t2t3OutPut:無Return:空無補充說明類VoidactionPerformed()Function：處理listInPut:無HandleDotFunction:HandleDotInPut:t1t2OutPut:無Return:空無補充說明11類Function：處理listInPut:無OutPut:無Return:空HandlePOrNFunction:HandlePOrNInPut:t1t2OutPut:無Return:空無補充說明類HandleEqualityFunction：處理listInPut:無OutPut:無Return:空HandleEqualityFunction:HandleEqualityInPut:t1t2t3OutPut:無Return:空無補充說明12類sinVoidactionPerformed()FunctionInPut:無HandleSinFunction:HandleSinInPut:t1t2t3OutPut:無Return:空無補充說明類HandleBackFunctionlistInPut:無OutPut:無Return:空HandleBackFunction:HandleBackInPut:t1t2OutPut:無Return:空無補充說明13類CVoidactionPerformed()FunctionlistresultShow0showComputerProcess程InPut:無OutPut:無Return:空HandleClearFunction:HandleClearInPut:t1t2OutPut:無Return:空無補充說明類StringgetNumberFunctionInPut:無OutPut:無ReturnNumberButtonFunction:NumberButtonInPut:無OutPut:無Return:空無補充說明14主要程序?qū)崿F(xiàn)4.計算結(jié)果保存到文件if(e.getSource()==copyButton)saveComputerProcessif(e.getSource()==clearButton)saveComputerProcess.setText(nullif(e.getSource()==saveButton==chooser.showSaveDialog(null=if(file!=null&&state==JFileChooser.try{=saveComputerProcess=====null;whilein.readLine())!=null}}catch}}}數(shù)字處理b=if(list=list.add(""resultShow.setText(""showComputerProcess.setText(""+list}15if(list==lists=""listresultShowshowComputerProcess.setText(""+list}if(list=list.add(""resultShow.setText(""showComputerProcess.setText(""+list.get(0)+""+list.get(1)+""+list}if(list==lists=""listresultShowshowComputerProcess.setText(""+list.get(0)+""+list.get(1)+""+list}}處理運算符b=if(list=listshowComputerProcess.setText(""+list.get(0)+""+list}if(listlistshowComputerProcess.setText(""+list.get(0)+""+list}if(list16list=list=list=""+運算符號try{=Double.parseDouble=Double.parseDouble=if(.equals("+"}if(.equals("-"}if(.equals("*"}if(.equals("/"=}=listlist.add(""list"="+result+""+listshowComputerProcesssaveComputerProcess.append(""+middleProcess+"="+result+"\n"resultShow.setText(""}catch}}}處理小數(shù)點=if(list=lists=null;if17list}listresultShowshowComputerProcess.setText(""+list}if(list=lists=null;iflist}resultShowshowComputerProcess.setText(""+list.get(0)+""+list.get(1)+""+}}處理正負號if(listtry{d=Double.parseDouble=valueOflistresultShowshowComputerProcess.setText(""+list}catch}if(list=listtry{d=Double.parseDouble=valueOf18listresultShowshowComputerProcess.setText(""+list.get(0)+""+list}catch}}處理等號if(listlistresultShow.setText(""showComputerProcess.setText(list}if(listlistlisttry{=Double.parseDouble=Double.parseDouble=if(.equals("+"if(.equals("-"if(.equals("*"if(.equals("/"resultShow.setText(""""++""+num+"="showComputerProcesssaveComputerProcess.append(""+process+"\n"list.set(0,""}catch}if(list19list=list=listtry{=Double.parseDouble=Double.parseDouble=if(.equals("+"if(.equals("-"if(.equals("*"if(.equals("/"resultShow.setText(""""++""+numTwo+"="showComputerProcesssaveComputerProcess.append(""+process+"\n"list.set(0,""list.removeLast();//list.removeLast();//}catch}}處理正弦函數(shù)if(list.size()==1||list=listtry{x=Double.parseDouble=Math.sin=String.valueOflistresultShow="sin("+numOne+")"showComputerProcesssaveComputerProcess.append(""+process+"\n"if(listlist}20}catch}if(list=listtry{x=Double.parseDouble=Math.sin=String.valueOflistresultShow="sin("+numTwo+")="showComputerProcesssaveComputerProcess.append