public String getTestContent()  
        { try {  
                 String s=null;
                 StringBuffer temp=new StringBuffer();
               if(读取!=null)                       
                  {
                   while((s=读取.readLine())!=null) 
                     { 
                       if(s.startsWith("**")) 
                           break;
                       temp.append("\n"+s);
                       if(s.startsWith("endend")) 
                        {
                          in.close();             
                          读取.close();  
                          完成考试=true;         
                        }
                   }
                  testContent=new String(temp); 
                  }
               else
                  {
                     testContent=new String("没有选择试题");
                  } 
              } 
          catch(Exception e)
              { 
                 testContent="试题内容为空,考试结束!!";
              }
          return testContent;
        } public TestArea()
  {
    list= new Choice();
    String 当前目录=System.getProperty("user.dir");
    File dir=new File(当前目录);
    FileName fileTxt=new FileName("txt");
    String fileName[]=dir.list(fileTxt);            
    for(int i=0;i<fileName.length;i++) 
        {
          list.add(fileName[i]);
        }这是一个考试的程序,可是我看不懂到底这个考试题库应该格式如何的,记事本里怎么写,写完放哪里,