Java图形界面小学生整数四则运算练习软件

import java.awt.*; import java.awt.event.*; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import javax.swing.*; public class ArithmeticTest7 extends JFrame implements ActionListener { private final String[] str = { "7", "8", "9", "/", "4", "5", "6", "*", "1", "2", "3", "-", ".", "0", "=", "+"}; private final String[] str2 = { "Start","Retry","Next turn","show his file"}; private final String[] str1 = { "+","-","*","/","r"}; JButton[] buttons = new JButton[str.length]; //buttons for numbers JMenuItem[] buttons1 = new JMenuItem[str1.length]; JButton giveAnswer = new JButton("give answer"); //button for reset JButton up[] = new JButton[str2.length]; JTextField display = new JTextField(""); JTextField display1 = new JTextField("答案"); JTextField answer = new JTextField(""); JTextField display2 = new JTextField("如有余数，填此"); JTextField answer2 = new JTextField(""); JTextField user1 = new JTextField("用户名："); JTextField user2 = new JTextField(""); JTextArea file = new JTextArea(""); JScrollPane File=new JScrollPane(file); JTextField numberOfDigit1 = new JTextField("位数："); JTextField numberOfDigit2 = new JTextField(""); JComboBox calculate=new JComboBox(); public ArithmeticTest7() { super("Calculator"); Font font = new Font("Consolas", Font.BOLD, 18); // add components JPanel pnlHead = new JPanel(new BorderLayout()); JPanel pnlHeadUp = new JPanel(new GridLayout(1,5)); JPanel pnlBodyEast = new JPanel(new GridLayout(3,1)); JPanel displayArea=new JPanel(new GridLayout(1,5)); displayArea.add(display); displayArea.add(display1); displayArea.add(answer); displayArea.add(display2); displayArea.add(answer2); pnlHeadUp.add(user1); pnlHeadUp.add(user2); pnlHeadUp.add(numberOfDigit1); pnlHeadUp.add(numberOfDigit2); pnlHeadUp.add(calculate); for (int i = 0; i < str1.length; i++) { calculate.addItem(str1[i]); } for (int i = 0; i < str2.length; i++) { up[i] = new JButton(str2[i]); up[i].setFont(font); if(i==0) pnlHeadUp.add( up[i]); else pnlBodyEast.add(up[i]); } pnlHead.add( displayArea, BorderLayout.CENTER); pnlHead.add( giveAnswer, BorderLayout.EAST); pnlHead.add( pnlHeadUp, BorderLayout.NORTH); display.setFont(font); giveAnswer.setFont(font); user1.setEnabled(false); display.setEnabled(false); display1.setEnabled(false); display2.setEnabled(false); numberOfDigit1.setEnabled(false); JPanel pnlBody = new JPanel(new BorderLayout()); pnlBody.add(File,BorderLayout.CENTER); pnlBody.add(pnlBodyEast,BorderLayout.EAST); setLayout(new BorderLayout()); add(BorderLayout.NORTH, pnlHead); add(BorderLayout.CENTER, pnlBody); giveAnswer.addActionListener(this); display.addActionListener(this); calculate.addActionListener(this); for (int i = 0; i < str2.length; i++) { up[i].addActionListener(this); } // set frame properties setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setSize(680, 800); Dimension displaySize = Toolkit.getDefaultToolkit().getScreenSize(); // 获得显示器大小对象 Dimension frameSize = getSize(); setLocation((displaySize.width - frameSize.width) / 2, (displaySize.height - frameSize.height) / 2); setVisible(true); } int o=0; int score=0; int[] Answer=new int[10]; int[] Answer2=new int[10]; int[] b=new int[10]; int[] n=new int[10]; int[] m=new int[10]; String[] c=new String[10]; String N,M; public void actionPerformed(ActionEvent e) { Object source = e.getSource(); if (source == giveAnswer) { String q=answer.getText(); int a=Integer.parseInt(q); if(a==Answer[o]) score=score+10; String str = null; switch (b[o]) { case 1: str=String.format("%-18s%-18s%-18s%-18s\r\n",n[o]+"+"+m[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); break; case 2: if(n[o]<m[o]) str=String.format("%-18s%-18s%-18s%-18s\r\n",m[o]+"-"+n[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); if(n[o]>=m[o]) str=String.format("%-18s%-18s%-18s%-18s\r\n",n[o]+"-"+m[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); break; case 3: str=String.format("%-18s%-18s%-18s%-18s\r\n",n[o]+"*"+m[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); break; case 4: if(n[o]<m[o]) { str=String.format("%-18s%-18s%-18s%-18s\r\n",m[o]+"/"+n[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); } if(n[o]>=m[o]) { str=String.format("%-18s%-18s%-18s%-18s\r\n",n[o]+"/"+m[o]+"=","用户答案:"+a,"标准答案:"+Answer[o],"目前得分:"+score); } break; } file.setText(file.getText()+str); if(o<10) { o=o+1; if(o!=10) {display.setText(c[o]); answer.setText(""); answer2.setText("");} } String o=file.getText(); File file=new File("E:\\"+user2.getText()+".his"); FileWriter fw = null; try { fw = new FileWriter(file); } catch (IOException e1) { e1.printStackTrace(); } try { fw.write(o); } catch (IOException e1) { e1.printStackTrace(); } } if (source==up[0]) CalculateE(); if (source==up[1]) { CalculateE(); file.setText(""); score=0; o=0; } if (source==up[2]) { CalculateE(); score=0; o=0; } if (source==up[3]) { File file1 = new File("E:\\"+user2.getText()+".his"); BufferedReader reader = null; try { reader = new BufferedReader(new FileReader(file1)); String tempString = null; while ((tempString = reader.readLine()) != null) { file.setText(file.getText()+tempString); } reader.close(); } catch (IOException e1) { e1.printStackTrace(); } finally { if (reader != null) { try { reader.close(); } catch (IOException e1) { } } } } } public void CalculateE() { String s=numberOfDigit2.getText(); int Number=Integer.parseInt(s); if(calculate.getSelectedItem()=="+") { for(int i=0;i<10;i++) b[i]=1; } if(calculate.getSelectedItem()=="-") { for(int i=0;i<10;i++) b[i]=2; } if(calculate.getSelectedItem()=="*") { for(int i=0;i<10;i++) b[i]=3; } if(calculate.getSelectedItem()=="/") { for(int i=0;i<10;i++) b[i]=4; } if(calculate.getSelectedItem()=="r") { for(int i=0;i<10;i++) b[i]=(int)(Math.random()*4)+1; } for(int i=0;i<10;i++) { n[i]=(int)(Math.random()*(Math.pow(10, Number)-1))+1; m[i]=(int)(Math.random()*(Math.pow(10, Number)-1))+1; N=String.valueOf(n[i]); M=String.valueOf(m[i]); switch (b[i])