difference « Date Time « Java Data Type Q&A

1. What's the difference between import java.util.*; and import java.util.Date;?    stackoverflow.com

I just want to output current and I wrote import java.util.*; at beginning, and System.out.println(new Date()); in the main part. But what I got was something like this: Date@124bbbf When I change the import to import java.util.Date; the code ...

2. Finding Date Difference    stackoverflow.com

What's the efficient way of finding say if a date is 5 days earlier than another day? Do I need to parse both days using a particular SimpleDateFormat first before I ...

3. Finding difference between two dates    stackoverflow.com

In a JSP page I have four sample dates like 01- dec , 15- dec, 30- dec and 15- jan. I need to check whether the date above and current date's ...

4. date.getTime() difference problem    stackoverflow.com

Greetings, I have one simple condition that never passes:

I want to check if it has been 5 seconds from one to another.
Update: Here is setter and getter:
public class Data{

5. java date difference puzzle    stackoverflow.com

I am trying to calculate a date time difference but I'm getting some strange results: Here is the source:

   import java.util.Calendar;
    import java.util.Collections;
    import ...

6. Difference in time between two dates in java    stackoverflow.com

I have to find the difference in time between two different date objects in java and if that time exceeds 5 sec i have to invalidate the session. Here's the scenario : I ...

7. Difference between two date strings in java    stackoverflow.com

I am trying to calculate difference between two date strings both of which are taken from user through a html form in format (yyyy/MM/dd) Code:

public boolean diffDate() throws ParseException

8. checking if difference between 2 date is more than 20 minutes    stackoverflow.com

I have a datetime in one variable previous.Now i want to check if the previous datetime is before twenty minutes from current time.How can i do it?

Date previous = myobj.getPreviousDate();

Date ...

10. Get the Difference between 2 dates    coderanch.com

11. Difference beteween two dates    coderanch.com

12. API methods for difference between two dates    coderanch.com

I don't know why Sun didn't add that to the standard library. But calculating the difference between to dates is easy. You just look at the millisecond values of your two Date objects and subtract them - then you have the difference in milliseconds. It's straightforward to convert this to days (just divide by 24 * 60 * 60 * 1000, ...

13. Difference between 2 dates    coderanch.com

14. Difference Between Dates    coderanch.com

15. Date difference    coderanch.com

import java.util.Calendar; import java.util.Date; import java.text.ParseException; import java.text.SimpleDateFormat; public class TestaDatas { public int calcula(Date firstDate, Date lastDate) { Calendar last = Calendar.getInstance(); last.setTime(lastDate); Calendar first = Calendar.getInstance(); first.setTime(firstDate); int diference = last.get(Calendar.DAY_OF_YEAR) - first.get(Calendar.DAY_OF_YEAR); return diference; } public Date converte(String sData) throws ParseException { return new SimpleDateFormat("dd/MM/yyyy").parse(sData); } public static void main(String[] args) throws ParseException { TestaDatas td = new ...

16. Date difference    coderanch.com

You can use java.text.SimpleDateFormat.parse() to convert a string to a Date object. Once you have that you can compare it to "new Date()" any way you like (the current Date will of course have hours, minutes and so on set, so if you're just interested in the day you can't compare them directly using compareTo).

17. Dates difference between them    coderanch.com

You can get a long value from a date or calendar that is the number of milliseconds since January 1, 1970 00:00:00.000 GMT (Gregorian). Subtracting one date from another will give you a fairly big number. You can try some math on that: time / 1000 = seconds seconds / 3600 = hours hours / 24 = days days / 365.25 ...

18. Date Difference    coderanch.com

import java.util.*; class Main { public static void main(String[] args) { Date now = new Date(); Calendar cal1 = Calendar.getInstance(); Calendar cal2 = Calendar.getInstance(); cal1.setTime(now); cal2.setTime(now); // 15 minutes later: cal2.add(Calendar.MINUTE, 15); // System.out.println(cal1); boring! System.out.println(cal1.getTime()); System.out.println(cal2.getTime()); System.out.print("Difference: "); int diffInMin = cal2.get(Calendar.MINUTE); diffInMin -= cal1.get(Calendar.MINUTE); System.out.println(diffInMin + " minutes"); } }

19. difference between two dates    coderanch.com

20. How to find difference between dates    coderanch.com

21. how to find the difference between Dates    coderanch.com

Hi Why don't you handle this in your query itself? Sysdate will give you current date and time, and the date of joining that would have been stored in the table can be subtracted. If its stored as Varchar(instead of date) use the inbuilt to_date function. This, alongwith a bit of googling will get you through. Jhakda

22. How to get difference between dates    coderanch.com

Hello, I have a created date in database which looks like '2006-12-01 11:02:17.0' I need to get the number of days since created implying I need to get the number of days between the created date and today's date. Somebody please help.This is an urgent requirement. P.S : I am not sure if I have posted in the right forum.Please bear ...

23. Difference between two Dates    coderanch.com

A very good Hello to all you guys, i am posting after a very long time and i am sure that this is a simple one for you out there I would like to know the difference between two dates in terms of days, i.e I have one String which contains date format string, and another java Date format date object ...

24. Date Difference ??? a Issue...???    coderanch.com

CODE 1 : String startDate = "01/01/2004"; String endDate = "02/01/2005"; String st[] = startDate.split("/"); String end[] = endDate.split("/"); String mnth = st[0];String day = st[1];String yr = st[2]; String mnth1 = end[0];String day1 = end[1];String yr1 = end[2]; Calendar scal = Calendar.getInstance(); Calendar ecal = Calendar.getInstance(); scal.set(Integer.valueOf(yr), Integer.valueOf(mnth), Integer.valueOf(day)); ecal.set(Integer.valueOf(yr1), Integer.valueOf(mnth1), Integer.valueOf(day1)); long difInDays = ((ecal.getTime().getTime() - scal.getTime().getTime()) / (1000 ...

25. exact date difference using Gregorian Calendar    coderanch.com

If gc1.before(gc2) returns true even though month and year are equal, then that must mean that day of month and/or time are not equal. So you should check your code, particularly the parts related to setting gc1 and gc2. If you do not want to use time in your comparison, you should make sure it remains 0.

26. Date difference    coderanch.com

27. Difference Between two dates    coderanch.com

Hi I am trying to calculate the difference between two dates. But i am getting wrong result. Here is my code. public static void main(String[] args) { Calendar calendar1 = Calendar.getInstance(); Calendar calendar2 = Calendar.getInstance(); calendar1.set(2010, 03, 31); calendar2.set(2010, 04, 01); long milliseconds1 = calendar1.getTimeInMillis(); long milliseconds2 = calendar2.getTimeInMillis(); long diff = milliseconds2 - milliseconds1; long diffSeconds = diff / 1000; ...

28. Difference of Two Dates    java-forums.org

29. Problem with date difference    java-forums.org

I have a problem with date difference in Java. I saw that there are already threads about that so I apologize for opening this thread. I have to write a program who accepts two dates from a user in a way that the user has to give: 1. day of the first date 2. month of the first day 3. year ...

30. Strings as Dates and difference    java-forums.org

This Example may help you! Set time whatever you want! Java Code: import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.TimeZone; public class DateTest { public class DateTest { static SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy"); public static void main(String[] args) { TimeZone.setDefault(TimeZone.getTimeZone("Europe/London")); //diff between these 2 dates should be 1 Date d1 = new Date("01/01/2007 12:00:00"); Date d2 = new Date("01/02/2007 12:00:00"); ...

31. difference between two dates..    java-forums.org

32. Date difference doubt?    forums.oracle.com

33. Difference between 2 date values?    forums.oracle.com

Any suggestions on the simplest way to do this: 1. I have an integer value( say 2), which stands for number of days. 2. I have a date value. I need to subtract 2 from the date value. How would i do this? int delay = 2; Date now = new Date(); I need: Date twoDaysAgo = ???

34. Find Difference between two dates. Help    forums.oracle.com

35. Problems with finding the difference between two dates    forums.oracle.com

hi.. Jaked your code is working fine. The point to note here is that you are calculating number of days by subtracting expiration date and ride date. The format of expiration date is like Mar 06 00:00:00 GMT+05:30 2007 and the format of ride date is Mar 06 17:44:12 GMT+05:30 2007. therefore when you subtract two dates and diffMillis are less ...

36. DIfference between two Dates    forums.oracle.com

38. Date Time difference    forums.oracle.com

I am not passing any arguments to VM. Why you are saying my regional settings aren't right. As I mentioned earlier the time zone is (GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi as per the system and there is almost 6 hr difference is there while printing in java. It is just a plain code which prints the time as Thu Mar ...

39. Difference between dates    forums.oracle.com

40. Difference between dates    forums.oracle.com

41. date difference    forums.oracle.com

/** * This emulates the VB DateDiff function. * *

 * * Usage : * DateUtil.datediff(DateUtil.DAY_DIFF, date1, date2); * 
 * * @param pintType The type of diff you want. It supports SECS/MILLI/DAYS/MONTHS and YEAR_DIFF * @param pdatValue1 The first day to substract from * @param pdatValue2 And the leaser date (Hopefully) * @return Returns the number of day/months or ...

42. Date Difference    forums.oracle.com

43. Difference between two dates    forums.oracle.com

45. algo for date difference    forums.oracle.com

Yes i have already gone through google search.. and none of them provide the accurate solution. Moreover the solutions would be just in either days or weeks. wat i am looking for is some guidance. I have got the difference in days. Now how to turn those days in years, months and days is what i am looking for. lets say ...

46. DIfference between two dates    forums.oracle.com

47. DIfference between two dates    forums.oracle.com

48. Date Difference    forums.oracle.com

You will want to format the difference also you might want to parse a string to a date. But this is just a guess because you still have not answered the question as to what format the dates are in now. If they are strings parse them with SimpleDateFormat if they are dates then you are already half way there.