javaBean 里面获取系统时间出错

	

          public String gettime()

	{

       Calendar cal=Calendar.getInstance();

       int year=cal.get(Calendar.YEAR);

       int month=cal.get(Calendar.MONTH);

       int date=cal.get(Calendar.DAY_OF_MONTH);  

       int hour=cal.get(Calendar.HOUR_OF_DAY);

       int minute=cal.get(Calendar.MINUTE);

       String year1=String.valueOf(year);

       String month1=String.valueOf(month);

       String date1=String.valueOf(date);

       String hour1=String.valueOf(hour);

       String minute1=String.valueOf(minute);

       return (year1+"-"+month1+"-"+date1+" "+hour1+":"+minute1);

       

	}

public String gettime()

   {

      SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm");//设置日期格式

      return df.format(new Date());// new Date()为获取当前系统时间

   }