Calculate Difference between two JDateChooser Value

Question

This is my codes but this is not working.

    Start.getDate();
    End.getDate();
    int diffInDays = (int)( (Start.getDate() - End.getDate()) / (1000 * 60 * 60 * 24));
    System.out.println(diffInDays);

So how can i make a program that the user can view the difference between 2 JDateChooser.

Answer 1

Date/Time calculations are a complex subject which are typically is best solved using a dedicated library to solve.

Java 8

Instant start = Start.getDate().toInstance();
Instant end = End.getDate().getInstance();

Duration duration = Duration.between(start, end);

Joda-Time

If you can't use Java 8, then you should use Joda-Time instead

DateTime start = new DateTime(Start.geDate().getTime());
DateTime end = new DateTime(End.geDate().getTime());

// You might need to use end, start instead, depending on which
// is later
Duration duration = new Duration(start, end);
Period period = duration.toPeriod();

You can have a look at this answer to see how you might format the value