Java保存计算过程的计算器

package com.cao; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import java.util.LinkedList; import java.io.*; public class CalculatorWindow extends JFrame implements ActionListener{ NumberButton numberButton[]; OperationButton operationButton[]; JButton 小数点操作,正负号操作,退格操作,等号操作,清零操作,sin; JTextField resultShow; JTextField showComputerProcess; JTextArea saveComputerProcess; JButton saveButton,copyButton,clearButton; LinkedList<String>list; HandleDigit handleDigit; HandleOperation handleOperation; HandleBack handleBack; HandleClear handleClear; HandleEquality handleEquality; HandleDot handleDot; HandlePOrN handlePOrN; HandleSin handleSin; public CalculatorWindow(){ setTitle("计算器"); JPanel panelLeft,panelRight; list=new LinkedList<String>(); resultShow=new JTextField(10); resultShow.setHorizontalAlignment(JTextField.RIGHT); resultShow.setForeground(Color.blue); resultShow.setFont(new Font("TimesRomon",Font.BOLD,16)); resultShow.setBorder(new SoftBevelBorder(BevelBorder.LOWERED)); resultShow.setEditable(false); resultShow.setBackground(Color.white); showComputerProcess=new JTextField(); showComputerProcess.setHorizontalAlignment(JTextField.CENTER); showComputerProcess.setFont(new Font("Arial",Font.BOLD,16)); showComputerProcess.setBackground(Color.cyan); showComputerProcess.setEditable(false); saveComputerProcess=new JTextArea(); saveComputerProcess.setEditable(false); saveComputerProcess.setFont(new Font("宋体",Font.PLAIN,16)); numberButton=new NumberButton[10]; handleDigit=new HandleDigit(list,resultShow,showComputerProcess); for(int i=0;i<=9;i++) { numberButton[i]=new NumberButton(i); numberButton[i].setFont(new Font("Arial",Font.BOLD,20)); numberButton[i].addActionListener(handleDigit); } operationButton=new OperationButton[4]; handleOperation=new HandleOperation(list,resultShow,showComputerProcess,saveComputerProcess); String 运算符号[]={"+","-","*","/"}; for(int i=0;i<4;i++){ operationButton[i]=new OperationButton(运算符号[i]); operationButton[i].setFont(new Font("Arial",Font.BOLD,20)); operationButton[i].addActionListener(handleOperation); } 小数点操作=new JButton("."); handleDot=new HandleDot(list,resultShow,showComputerProcess); 小数点操作.addActionListener(handleDot); 正负号操作=new JButton("+/-"); handlePOrN=new HandlePOrN(list,resultShow,showComputerProcess); 正负号操作.addActionListener(handlePOrN); 等号操作=new JButton("="); handleEquality=new HandleEquality(list,resultShow,showComputerProcess,saveComputerProcess); 等号操作.addActionListener(handleEquality); sin=new JButton("sin"); handleSin=new HandleSin(list,resultShow,showComputerProcess,saveComputerProcess); sin.addActionListener(handleSin); 退格操作=new JButton("退格"); handleBack=new HandleBack(list,resultShow,showComputerProcess); 退格操作.addActionListener(handleBack); 清零操作=new JButton("C"); handleClear=new HandleClear(list,resultShow,showComputerProcess); 清零操作.addActionListener(handleClear); 清零操作.setForeground(Color.red); 退格操作.setForeground(Color.red); 等号操作.setForeground(Color.red); sin.setForeground(Color.blue); 正负号操作.setForeground(Color.blue); 小数点操作.setForeground(Color.blue); panelLeft=new JPanel(); panelRight=new JPanel(); panelLeft.setLayout(new BorderLayout()); JPanel centerInLeft=new JPanel(); panelLeft.add(resultShow,BorderLayout.NORTH); panelLeft.add(centerInLeft,BorderLayout.CENTER); centerInLeft.setLayout(new GridLayout(4,5)); centerInLeft.add(numberButton[1]); centerInLeft.add(numberButton[2]); centerInLeft.add(numberButton[3]); centerInLeft.add(operationButton[0]); centerInLeft.add(清零操作); centerInLeft.add(numberButton[4]); centerInLeft.add(numberButton[5]); centerInLeft.add(numberButton[6]); centerInLeft.add(operationButton[1]); centerInLeft.add(退格操作); centerInLeft.add(numberButton[7]); centerInLeft.add(numberButton[8]); centerInLeft.add(numberButton[9]); centerInLeft.add(operationButton[2]); centerInLeft.add(sin); centerInLeft.add(numberButton[0]); centerInLeft.add(正负号操作); centerInLeft.add(小数点操作); centerInLeft.add(operationButton[3]); centerInLeft.add(等号操作); panelRight.setLayout(new BorderLayout()); panelRight.add(showComputerProcess,BorderLayout.NORTH); saveButton=new JButton("保存"); copyButton=new JButton("复制"); clearButton=new JButton("清除"); saveButton.setToolTipText("保存计算过程到文件"); copyButton.setToolTipText("复制选中的计算过程"); clearButton.setToolTipText("清除计算过程"); saveButton.addActionListener(this); copyButton.addActionListener(this); clearButton.addActionListener(this); panelRight.add(new JScrollPane(saveComputerProcess),BorderLayout.CENTER); JPanel southInPanelRight=new JPanel(); southInPanelRight.add(saveButton); southInPanelRight.add(copyButton); southInPanelRight.add(clearButton); panelRight.add(southInPanelRight,BorderLayout.SOUTH); JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,panelLeft,panelRight); add(split,BorderLayout.CENTER); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setVisible(true); setBounds(100,50,528,258); validate(); } public void actionPerformed(ActionEvent e){ if(e.getSource()==copyButton) saveComputerProcess.copy(); if(e.getSource()==clearButton) saveComputerProcess.setText(null); if(e.getSource()==saveButton){ JFileChooser chooser=new JFileChooser(); int state=chooser.showSaveDialog(null); File file=chooser.getSelectedFile(); if(file!=null&&state==JFileChooser.APPROVE_OPTION){ try{ String content=saveComputerProcess.getText(); StringReader read=new StringReader(content); BufferedReader in=new BufferedReader(read); FileWriter outOne=new FileWriter(file); BufferedWriter out=new BufferedWriter(outOne); String str=null; while((str=in.readLine())!=null){ out.write(str); out.newLine(); } in.close(); out.close(); } catch(IOException e1){ } } } } public static void main(String[] args) { new CalculatorWindow(); } }