计算年龄精确到分钟

public String getAge(String birthdayDate,String endDate){
		String result = "  岁  月  日  小时";
		if(BaseUtil.isEmpty(birthdayDate)||BaseUtil.isEmpty(endDate)){
			return result;
		}
		try {
			Date birthTime = DateUtil.stringToDate(birthdayDate, "yyyy-MM-dd HH:mm");
			Date endTime = DateUtil.stringToDate(endDate, "yyyy-MM-dd HH:mm");
			Calendar bc = Calendar.getInstance();
			bc.setTime(birthTime);
			Calendar dc = Calendar.getInstance();
			dc.setTime(endTime );
			int hour = dc.get(Calendar.HOUR_OF_DAY)-bc.get(Calendar.HOUR_OF_DAY);
		    int minute = dc.get(Calendar.MINUTE)-bc.get(Calendar.MINUTE);
		    int day = dc.get(Calendar.DAY_OF_MONTH) - bc.get(Calendar.DAY_OF_MONTH);   
	        int month = dc.get(Calendar.MONTH) - bc.get(Calendar.MONTH);   
	        int year = dc.get(Calendar.YEAR) - bc.get(Calendar.YEAR); 
	        //按照减法原理，先day相减，不够向month借；然后month相减，不够向year借；最后year相减。 
	        if(minute<0){
	        	hour--;
	        }
	        if(hour<0){
	        	day --;
	        	hour = 24+hour;
	        }
	        if(day<0){   
	            month --;   
	            dc.add(Calendar.MONTH, -1);//得到上一个月，用来得到上个月的天数。   
	            day = day + dc.getActualMaximum(Calendar.DAY_OF_MONTH);   
	        }   
	        if(month<0){   
	            month = (month+12)%12;   
	            year--;   
	        }
	        StringBuffer buffer = new StringBuffer();
	        if(year>0){
	        	buffer.append(year+"岁");
	        	buffer.append(month+"月");
	        }else{
	        	if(month>0){
	        		buffer.append(month+"月");
	        	}
	        }
	        buffer.append(day+"日");
	        buffer.append(hour+"小时");
	        return buffer.toString();
		} catch (RuntimeException e) {
			//e.printStackTrace();
		}
		return result;
	}
	

 分别获得两个时间的分、时、天、月、年。从分开始计算，不够则从上一个单位借。