How to get the difference between two dates in java in hours/minutes ?

I hope the snippet code provided is sufficient for this problem, please try…!!!

public long getHrsOrMinutesDiff(Date fromDate, Date toDate, String returnType) {
		
		if ("hour".equals(returnType)) { // here if pass hours the method will return hours between the dates
			long diff = fromDate.getTime() - toDate.getTime();
			return diff / (60 * 60 * 1000);
		} else {// here if pass minutes the method will return minutes between the dates
			long diff = fromDate.getTime() - toDate.getTime();
			return diff / (60 * 1000);
		}
		
}