j2me +在表格中以递减形式打印数字

我在j2me中工作。请帮助我。我用下面的代码： -j2me +在表格中以递减形式打印数字

protected void startApp() { 
      display = Display.getDisplay(this); 

      form = new Form("Item Layout");    
         TxtData=new TextField("Number","" , 4, TextField.NUMERIC); 
      GO = new Command("Go", Command.OK, 1); 
      Exit = new Command("Exit", Command.EXIT, 2); 
      form.append(TxtData); 

      form.addCommand(GO); 
      form.addCommand(Exit); 
      form.setCommandListener(this); 
      display.setCurrent(form);   


    } 

    protected void pauseApp() { 
    } 

    protected void destroyApp(boolean unconditional) { 
    notifyDestroyed(); 
    } 

    public void commandAction(Command cmnd, Displayable dsplbl) { 
    String label = cmnd.getLabel(); 
    if(label.equals("Go")){ 
    number=Integer.parseInt(TxtData.getString()); 
    timer = new Timer(); 
    task = new TestTimerTask(); 
    timer.schedule(task,500,500); 
    } else if(label.equals("Exit")){ 
     destroyApp(true); 
    } 

    } 

    private class TestTimerTask extends TimerTask{ 
    public final void run(){   
    number--; 
    form.append(""+ number+"\n"); 

    if(number==0){ 
    timer.cancel(); 
    } 
    } 
    }

而且我的输出是： - enter image description here