Java에서 두 날짜 사이의 일수를 정확하게 계산하는 방법은 무엇입니까?

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

public class DateDifferenceCalculator {

    public static void main(String[] args) {

        // Obtain the first date in German notation (dd mm yyyy)
        Scanner s = new Scanner(System.in);
        System.out.print("Insert first date (dd mm yyyy): ");
        String inputDate1 = s.nextLine();

        // Parse the first date into a Date object
        SimpleDateFormat myFormat = new SimpleDateFormat("dd MM yyyy");
        Date date1 = null;
        try {
            date1 = myFormat.parse(inputDate1);
        } catch (ParseException e) {
            e.printStackTrace();
        }

        // Obtain the second date in German notation (dd mm yyyy)
        System.out.print("Insert second date (dd mm yyyy): ");
        String inputDate2 = s.nextLine();

        // Parse the second date into a Date object
        Date date2 = null;
        try {
            date2 = myFormat.parse(inputDate2);
        } catch (ParseException e) {
            e.printStackTrace();
        }

        // Calculate the time difference in milliseconds
        long diff = date2.getTime() - date1.getTime();

        // Convert the time difference to days
        float days = (diff / (1000*60*60*24));

        // Print the number of days between the two dates
        System.out.println("Days: " + days);

        s.close();
    }
}