java new Date()字符型转yyyy-MM-dd HH:mm:ss型字符串

public static void main(String[] args) {String ss = "Mon Aug 06 11:24:59 CST 2012";Date d = new Date(ss);Calendar calendar = Calendar.getInstance();calendar.setTime(d);calendar.add(Calendar.DAY_OF_MONTH, -1);calendar.add(Calendar.HOUR_OF_DAY, 10);SimpleDateFormat sdf=  new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String beginTime = sdf.format(calendar.getTime());System.out.println(beginTime);}