i want to get difference of days by subtracting dates in java using Gregorian calendar:

Question

GregorianCalendar last = new GregorianCalendar(py,pm-1,pd);
System.out.println(last.getTime());
GregorianCalendar present = new GregorianCalendar(py,pm-1,pd);
System.out.println(present.getTime());

long diff = Math.abs(prsent.getTime() - last.getTime());

Problem facing when subtracting these two dates

Answer 1

ChronoUnit is what you can use for the difference between dates:

long minutesDiff = ChronoUnit.MINUTES.between(present.toInstant(), last.toInstant());