201571030318/201574010343《小学四则混合运算》结队报告 马麒

import java.io.*; 
    import javax.swing.*;
    import javax.swing.event.*; 
    import java.awt.event.*;
    import java.awt.*; 
    import java.util.*; 
    public class xiti5_5 extends JFrame implements ActionListener,ItemListener{ 
    String str[]=new String[7],s;  
    FileReader file;     BufferedReader in;    
    JButton restart=new JButton("重新练习");    
    JButton next=new JButton("下一题目"); 
    JButton finish=new JButton("交卷");   
    JCheckBox option[]=new JCheckBox[4];  
    JLabel score=new JLabel("20   剩余时间： 120s");  
    JTextField question=new JTextField(10); 
    int account=0;  
    int n= 0;
    xiti5_5(){     
    for(int i=0;i<4;i++){    
    option[i]=new JCheckBox();             
    option[i].addItemListener(this);  
           }          
    restart.addActionListener(this);
         next.addActionListener(this); 
         finish.addActionListener(this);  
         try{        
         file=new FileReader("D:\\result.txt");          
         in=new BufferedReader(file);        
     }catch(IOException e){}          
    Box boxV=Box.createVerticalBox();         
    JPanel p1=new JPanel();             
    JPanel p2=new JPanel();             
    JPanel p3=new JPanel();          
    JPanel p4=new JPanel();              
    p1.setLayout(new FlowLayout(FlowLayout.CENTER));        
    p1.add(new JLabel("题目   :10+72+6="));p1.add(question);        
    p2.setLayout(new FlowLayout(FlowLayout.CENTER));         
    p2.add(new JButton("确定"));         
        
    p3.setLayout(new FlowLayout(FlowLayout.CENTER));         
    p3.add(new JLabel("您的得分："));p3.add(score);         
    p4.setLayout(new FlowLayout(FlowLayout.CENTER)); 
    p4.add(restart);p4.add(next);p4.add(finish);  
    boxV.add(p1);boxV.add(p2);boxV.add(p3);boxV.add(p4);  
        Container con=getContentPane();  
           con.add(boxV);   
          this.setSize(800,300);  
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
            this.setVisible(true);   
          this.validate();    
         reading();  
               }    
      public void reading(){   
          int i=0;        
     try{              
    s=in.readLine().trim();  
               if(!(s.startsWith("end"))){                  
    StringTokenizer tokenizer=new StringTokenizer(s,"#");           
          while(tokenizer.hasMoreTokens()){         
                str[i]=tokenizer.nextToken();                
         i++;         
            }                
      question.setText(str[0]);              
       for(int j=1;j<=4;j++){                
          option[j-1].setLabel(str[j]);        
             }                            
     }              
    else if(s.startsWith("end")){             
         question.setText("考试结束，点击交卷按钮查看得分。");               
      next.setEnabled(false);                 
    in.close();file.close();            
     }                     
     }catch(Exception exp){question.setText("无试题文件");}   
      }      
    public void actionPerformed(ActionEvent e){         
    if(e.getSource()==restart){            
     account=0;              
    next.setEnabled(true);            
     score.setText(account+"分");             
    try{                  
    file=new FileReader("D:\\java.txt");                 
    in=new BufferedReader(file);             
    }catch(IOException ee){}             
    reading();       
      }          
    if(e.getSource()==next){
    reading();
                  for(int j=0;j<4;j++){  
                    option[j].setEnabled(true); 
                    option[j].setSelected(false);      
           }            
                 }         
     if(e.getSource()==finish){ 
      int n=JOptionPane.showConfirmDialog(null,"交卷以后将不能再修改，确实要交卷吗？", "确认对话框",JOptionPane.YES_NO_OPTION);        
         if(n==JOptionPane.YES_OPTION){             
        for(int i=0;i<4;i++){         
                 option[i].setEnabled(false);   
                  }                
      score.setText(account*10+"分");  
                   restart.setEnabled(false); 
                    next.setEnabled(false);  
                   finish.setEnabled(false);   
              }       
              }            
             }     
     public void itemStateChanged1(ItemEvent e)    
     {          
    for(int j=0;j<4;j++){             
     if(option[j].getLabel().equals(str[5])&&option[j].isSelected()){     
                account++;         
         }                             
        }               
         
    if(n==JOptionPane.YES_OPTION){  
        for(int i=0;i<4;i++){                  
            option[i].setEnabled(false);           
            }                 
        score.setText(account*10+"分");     
        restart.setEnabled(false);          
        next.setEnabled(false);     
        finish.setEnabled(false);            
        }                                  }  
        public void itemStateChanged(ItemEvent e)     { 
            for(int j=0;j<4;j++){      
                if(option[j].getLabel().equals(str[5])&&option[j].isSelected()){   
                    account++;              }                                 }             }   
        public static void main(String args[]){      
            xiti5_5 ET=new xiti5_5();       
            }     }