code: public static String formatDateToHRStyle(HR hr, Date date){
  		if (null == date) {
  			return "";
  		}
  		String style = DateTimeKit.TIME_24HR_STYLE;
  		if (hr == HR.HR12) {
  			style = DateTimeKit.TIME_12HR_STYLE;
  		}
  		return formatDateToStyle(style, date);
  	}
docs: 格式化日期为时间格式
  @param hr
  @param date
  @return