1. Calculating difference in dates in Java stackoverflow.comI find it funny that Java (or the java.util library) does not have a builtin function to calculate difference in dates. What is the best way to do this? I know ... 
2. Calculating a day given a Date stackoverflow.comFrom a given Date I need to calculate midnight of its day. Here's what I came up with. It's so ugly that I figure there must be a better way.

3. Best way to calculate next date from start plus frequency using joda time stackoverflow.comI want to work out the next payment date in my code. I have a start date and i have a payment frequency which can be DAY, WEEK, MONTH or YEAR. ... 
4. poi wrong date formula value calculated stackoverflow.comI have the following code

5. Using GregorianCalendar.setGregorianChange for calculating time difference stackoverflow.comI'm reading Uncle Bob's "The Craftsman" series, and have gotten to #29 (PDF). In it, there's this snippet in test code, for asserting dates are close enough:

6. Calculating end date while skipping holidays + Joda time stackoverflow.comI would like to calculate end date (and time) of an event. I know starting date and duration (in minutes). But:

7. how to calculate difference between two dates using java stackoverflow.comWhat would be the simplest way to find the difference between two java.util.Date objects in java. We are just interested in the days part alone (no minutes, seconds) Note: We don't want ... 
8. How to calculate "time ago" in Java? stackoverflow.comIn Ruby on Rails, there is a feature that allows you to take any Date and print out how "long ago" it was. For example:

9. how to calculate a minutes from the TimeStamp in java? stackoverflow.comI want to calculate the number of minutes from the TimeStamp. How to do that? for exmple I have a TimeStamp value as 13/11/10 1:01 PM. I need to get that in ... 
10. How to calculate compound interest by days? stackoverflow.comI am writing a Java application to calculate interest. The formulas for Simple, Compound, and Continuously Compounded interest use years to calculate the amount accumulated, but I want to use days ... 
11. Calculate number of weekdays between two dates in Java stackoverflow.comCan anyone point me to some Java snippet wherein i can get business (except Sat and Sun) days between two dates. 
12. calculate diff. between two times given that we have two different strings for of time and date stackoverflow.comI have one time in which i have date as string and time also is string.I want to calculate the diff. of such two times in java. e.g. time 1:"26/02/2011" and "11:00 ... 
13. How can I calculate the difference between two dates stackoverflow.comPossible Duplicate:I have two dates eg 19/03/1950 and 18/04/2011. how can i calculate the difference between them ... 
14. Calculate date/time difference in java stackoverflow.comI want to calculate difference between 2 dates in hours/minutes/seconds. I have a slight problem with my code here it is :

15. Calculate month difference in Joda Time stackoverflow.comAt the 4th line of code (ignore whitespace & comments) and beyond I'm calculating the month difference between 2 dates. This works, but looks a bit hacky. Is there a better ... 
16. How to calculate difference ONLY in months using Java's Joda API stackoverflow.comI am writing a program that is supposed to just calculate the months between 2 given dates and return the value to the program. For instance, if I have to calculate ... 
17. Calculate current Age ; using Java stackoverflow.comI am trying to calculate the current age of a user .. but using the format i would like to use has caused some issues for me . I could just ... 
18. Calculating dates given two dates excluding weekend stackoverflow.comI am using Joda time api in a Spring 3.0 project for to calculate dates. Now I have a start and end date and I want to get everyday exept weekend ... 
19. Calculate Yesterday's date coderanch.com 
20. calculate duration between two dates coderanch.comWell, tradition way is to chnage them into milliseconds, using getTime() method of Date class, then after you got the difference back, change it back to Date... But there is another tool available out there which you don't need such thing to do... You might want to have a look at their site... http://jodatime.sourceforge.net Even though there is a need to ... 
21. Calculate number of days between two dates coderanch.comThis should do it, though it's a little bit "bruteforceish". I assumed your nonwork days were Saturday and Sunday. I also assumed that the 2 dates you're passing in are relatively close to each other. For instance, if there were 10 years between the 2 dates, then this approach might be too inefficient. In that case, I would lop off the ... 
22. Problem with calculating difference of 2 date in days coderanch.comI understand the way you've tried to solve this problem. If I get a chance, I might try to get it to work. Otherwise, if I were to tackle this problem, I'd first get the millesecond representation of the two dates, subtract the smaller from the larger, and then convert the differences in milleseconds into days. 
23. Calculating Dates coderanch.com 
24. How to calculate number of days between two Timestamp coderanch.comI wrote a class to calculate differences in Dates. Feel free to try it and use it. /* * TimeSpan.java * * Created on January 28, 2003, 11:09 AM */ /* ==================================================================== * * The JavaRanch Software License, Version 1.0 * * Copyright (c) 2003 JavaRanch. All rights reserved. * * Redistribution and use in source and binary forms, with or ... 
25. Calculating no. of working days between tow dates coderanch.comHi Michael, I tried the code below>public class WeekdayTest extends TestAbstract { public static void main(String[] args) { Date stdt = new Date(); String startdate = "15/09/2004"; String enddate = "18/09/2004"; SimpleDateFormat sdf = new SimpleDateFormat("dd/mm/yyyy"); try{ Date start = sdf.parse(startdate); Date end = sdf.parse(enddate); int workingDays = 0; while(!start.after(end)); { int day = start.getDay(); if ((day != Calendar.SATURDAY)  (day ... 
26. Calculating weekday and weekend dates..Urgent coderanch.comI have been trying to figure out how to calculate weekend and weekday rates for a project but no luck. So hopefully someone can offer a little assistance.. this is my scenario.. A user enters in the date that a furniture item is returned as a string. the user also enters in the date it was due.. now supposed the furniture ... 
27. calculate dates coderanch.com 
28. java method to calculate due date coderanch.comOriginally posted by Henry Wong: You have a couple of options... (1) you can use the Calendar class to calculate the two weeks from the current date, or (2) you can just get the time in milliseconds from the date, add two weeks worth of milliseconds, and then create a new data object. Henry 
29. Calculate date coderanch.comI want to print a date of one year later. I tried to write the program but it will not print day properly(it calculate year and month correctly). import java.util.*; class DateTest { public static void main(String[] args) { Date today =new Date(); int year = today.getYear(); int month = today.getMonth(); int day = today.getDay(); Date nextDate = new Date(year+1,month,day); System.out.println ... 
30. How to Calculate 30 days minus Today's Date? coderanch.com 
31. Calculate Business Days between two dates using java coderanch.comHi experts, I want to find the business days between two dates. I found following solution on google. public static int getWorkingDaysBetweenTwoDates(Date startDate, Date endDate) { Calendar startCal; Calendar endCal; startCal = Calendar.getInstance(); startCal.setTime(startDate); endCal = Calendar.getInstance(); endCal.setTime(endDate); int workDays = 0; //Return 0 if start and end are the same if (startCal.getTimeInMillis() == endCal.getTimeInMillis()) { return 0; } if (startCal.getTimeInMillis() ... 
32. calculating with dates javaforums.org 
33. Calculate no of weeks between dates javaforums.orgHi, I have a start date and an end date. Start date is always a sunday and end date a saturday. I have to calculate the no of weeks between the start date and end date. I am confused about how to calculate when the enddate is in another year? The maximum difference allowed is 26 weeks I am using Calender.WeekofYear ... 
34. Facing problem while calculating the difference between the two dates? forums.oracle.com 
35. how to calculate Difference between two datetime excluding weekend forums.oracle.comString dateDiff(String frDate, String toDate) { Calendar frCal = Calendar.getInstance(); Calendar toCal = Calendar.getInstance(); long weekEnd=0.0; try{ Date d1=new Date(frDate); Date d2=new Date(toDate); if(d1.after(d2)) return "Date 1 cannot be Greater than Date 2"; frCal.setTime(d1); toCal.setTime(d2); long d1Ms=d1.getTime(); long d2Ms=d2.getTime(); weekEnd = (weekEnds(frCal,toCal))*(24*60); //converting to mins return (Math.abs(((d2Msd1Ms)/(60*1000))  weekEnd)).toString(); }catch(Exception e){return "Err";} } 
36. calculate a date which is 90 days after todays date ? forums.oracle.com 
37. calculating months between two dates?? forums.oracle.comYou need to tell us your definition of the number of months between two dates before we can help you implement it. Ask yourself the hard questions like how many months there are between 2007 January 1 and 2007 January 31. And how many months there are between 2004 February 29 and 2005 February 28. See what other edge cases you ... 
38. Calculating Date Difference forums.oracle.com 
39. date time calculating forums.oracle.com 
40. revised: calculating date objects forums.oracle.comIf it's part of your homework to do all that calendarfiddling, then you never change eMonth so you treat every month as if it had 31 days. If it isn't part of your homework, then where you are going wrong is doing all that calendarfiddling instead of using Calendar objects to do those calculations. 
41. calculating dates without objects forums.oracle.comEMERGENCY! This problem is really stressing me out. I am really struggling to come up with a way to calculate the number of days as described in the problem. HERE IS THE PROBLEM: (1) Prompt the user for a premium amount (in dollars and cents, but assume the user does not enter the $ sign), a start date and an end ... 
42. calculating dates forums.oracle.com 
43. calculate date difference between overlapping periods forums.oracle.commy objective are: to be able to calculate the actual number of stays (including any additions for the first day away) to be able to calculate number of total days  including over laps  these will be paid in a different rate) number of days in each hotel class  lower and higher since i am clueless how to go ... 
44. How do I date calculate? forums.oracle.com 
45. Calculating Difference between two dates forums.oracle.com 
46. calculating the number of days difference between two dates forums.oracle.comlong differenceInMillis = endDate.getTimeInMillis()  startDate.getTimeInMillis(); long differenceInDays = differenceInMillis /(24*60*60*1000); for (int i = 0; i <= differenceInDays; i++) { int month = startDate.get(Calendar.MONTH)+1; String monString = String.valueOf(month); String year = (String.valueOf(startDate.get(Calendar.YEAR))); String day = (String.valueOf(startDate.get(Calendar.DATE))); if(monString.length()==1){ monString = "0" + monString ; }if(day.length()==1){ day = "0" + day ; } System.out.println(monString + "/" + day + "/" + year); ... 
47. Calculate Date forums.oracle.comHi All I am new to java , i want to calculate the timestamp according to different conditions for example i want to fetch the record from databse which was inserted during last 7 days . So first i need to calculate the date from today to last 7 days for e.g today is 03102008 and the past 7 days date ... 
48. Calculate if date falls at the end of a quarter or not forums.oracle.comHi all Is there a good way using Java Dates to calculate if a date falls at the end of a quarter? e.g. I want to pass in a date such as the 30 June and for the code to indicate that this is a month which falls at the end of a quarter (in this case the 2nd quarter). However ... 
49. Calculating date forums.oracle.comI have come up with something similar which is working perfect as required! thanks all for your comment! and PhHein never stop people willing to help. I didnt make any comment when you pointed out the API  why are you trying to turn the post into something else. Sorry it was just a simple not asking you to be fk ... 
50. [Urgent] Need help calculating difference between two dates forums.oracle.comDude. I've tried doing assignments under pressure, and it doesn't work. Here's a piece of free advice. Start earlier next time, don't put "urgent" in the title of your post b/c it just pisses people off around hereand is a sure sign of an overdue homework assignment which no one around here likes helping with, and try to ask intelligent questionsdon't ... 
51. How to calculate the months between two different dates forums.oracle.comRajeshkannan wrote: I can't find any code in that forum. can you please send the java code Most of us believe that it is better to teach a man to fish than to give a man a fish, and so because of this and in the spirit of trying to help you in the best way possible we often avoid just ... 
52. calculating the date 30 days from the todays date forums.oracle.com 
53. Calculating How Many Thursday Are Between Two Dates... forums.oracle.com 
54. how to calculate number of sundays and saturdays between two Dates forums.oracle.comif(m.equalsIgnoreCase("Feb")) { month=2; } if(m.equalsIgnoreCase("Mar")) { month=3; } if(m.equalsIgnoreCase("Apr")) { month=4; } if(m.equalsIgnoreCase("May")) { month=5; } if(m.equalsIgnoreCase("Jun")) { month=6; } if(m.equalsIgnoreCase("Jul")) { month=7; } if(m.equalsIgnoreCase("Aug")) { month=8; } if(m.equalsIgnoreCase("Sep")) { month=9; } if(m.equalsIgnoreCase("Oct")) { month=10; } if(m.equalsIgnoreCase("Nov")) { month=11; } if(m.equalsIgnoreCase("Dec")) { month=12; } return month; } public static int getDay(String date) { Integer day=new Integer(date.substring(9,11)); return day.intValue(); } public static ... 
55. Problem with calculating dates using GregorianCalendar. forums.oracle.comnow.YEAR and birthDate.YEAR are the same value, and it's not the year part of the dates represented by those calendar objects. Rather, it's the value of the Calendar.YEAR field, which is a constant (a final static field) indicating which numbered field in a Calendar object represents a YEAR. It's probably something low, like 5 or 6. And the difference between the ... 
56. how to calculate date difference excluding holiday forums.oracle.comWell, the Calendar class will give you the dayofweek of the start and end dates, so you can work out the adjustment for the way weekends cut in. And you can calculate the raw number of days quite easilly by subtracting the milliseconds times and dividing by 24 * 60 * 60 * 1000. (round the result, because of possible problems ... 
57. calculate date forums.oracle.comI don't quite get your questions. You have too dates already (one from your database, one is today's date), so what is it you want to calculate? Anyway, for any calculations on dates, I recommend using class Calendar and/or GregorianCalendar. Take a look at those. If you want to know how many days have passed since start date from database: Use ... 
58. calculate the no.of days between two dates without using the date and cale forums.oracle.com 
59. Calculating difference in dates forums.oracle.comThere was a post earlier on this topic, but I just thought I'd confirmwhen calculating the difference between 2 dates, you can use the getTime() method to return the time elapsed since Jan 1st 1970. Does this take into account leap years & change in daylight savings? It can be quite tricky figuring out how many leap years were in the ... 
60. calculate number of days between two dates forums.oracle.com 
61. Calculating Dates forums.oracle.comDont ask me to google it.. Why? Ask yourself ... what do you want .. the solution? or learn how that solution was achieved? I am no experts on Dates, however I would go in the API documentation to see if there is some "Go to next day" method or "Add x ammount of days" method. If I find those I ... 
62. Is there any Java method that can calculate the days between two dates? forums.oracle.comHi, one of my program need the feature of calculating the number of days between two dates. The program accepts a user input date, e.g. 2006.9.27, and then calculate how many days have been passed since a given starting date, e,g, 1998.7.1. Is there any existing Java class or method that provides the functionality? Or I have to write my own ... 