display Date diff in jsp

Question

I have a date field in database which store just date without time. Now I want to know the number of days difference in current date and my date field while displaying that

Answer 1

  Calendar calendar1 = Calendar.getInstance();
  Calendar calendar2 = Calendar.getInstance();
  calendar1.set(2007, 01, 10);
  calendar2.set(2007, 07, 01);

  long milliseconds1 = calendar1.getTimeInMillis();
  long milliseconds2 = calendar2.getTimeInMillis();
  long diff = milliseconds2 - milliseconds1;
  long diffSeconds = diff / 1000;
  long diffMinutes = diff / (60 * 1000);
  long diffHours = diff / (60 * 60 * 1000);
  long diffDays = diff / (24 * 60 * 60 * 1000);

  System.out.println("\nThe Date Different Example");
  System.out.println("Time in milliseconds: " + diff + " milliseconds.");
  System.out.println("Time in seconds: " + diffSeconds + " seconds.");
  System.out.println("Time in minutes: " + diffMinutes + " minutes.");
  System.out.println("Time in hours: " + diffHours + " hours.");
  System.out.println("Time in days: " + diffDays + " days.");