time « Calendar « Java Data Type Q&A

1. Java calendar time, minute is wrong    stackoverflow.com

Anyone know why the MINUTE method in java.util.Caldendar returns an incorrect minute?

import java.util.Calendar;

public class Clock
    // Instance fields
    private Calendar time;


2. How do you set the time and only the time in a calendar in Java?    stackoverflow.com

Having the hours and minutes, is there any easier or better way to set it into a Calendar object than:


3. Getting the Time component of a Java Date or Calendar    stackoverflow.com

Is there a simple or elegant way to grab only the time of day (hours/minutes/seconds/milliseconds) part of a Java Date (or Calendar, it really doesn't matter to me)? I'm looking for ...

4. How do I determine time passed between two Calendar Objects in Java?    stackoverflow.com

What is the best way to count the amount of time between two Calendar dates in java. I am writing a method that determines the number of months that pass between ...

5. Migrating from Java Calendar to Joda Date Time    stackoverflow.com

Previously, when I first design a stock application related software, I decide to use java.util.Date to represent date/time information of a stock. Later, I realize most of the methods in java.util.Date is ...

6. get date for next time at 1am    stackoverflow.com

In order to run a background service i want to scedule a thread for running daily at 1am. How can i get this date in java?

Calendar cal = Calendar.getInstance();
Date date ...

7. Java Calendar arithmetic issue    stackoverflow.com

Having trouble finding a solution for my situation here. Sorry if this has been answered before but I couldn't find one that worked for me. Problem: Trying to test if a ...

8. How to calculate elasped time in Java from a provided hour ONLY    stackoverflow.com

There are two parts to this: first compute the start date. Then compute the elapsed time. For the second part, I found some good advice here: Calculate elapsed time in ...

9. Reset time part of Calendar instance in Java    stackoverflow.com

There is Java code,which is ran on 2 different environments and inserts records with JdbcTemplate to DB. Results of its running are different for both envs. Particularly,for Date fields. On first environment(Oracle XE) ...

10. how can i set time value to 00:00:00 in the dateformat such as Tue Dec 28 17:36:28 IST 2010?    stackoverflow.com

I'm using Java and I'm trying the below piece of code

Calendar cal1 = Calendar.getInstance();  
cal1.add(Calendar.DAY_OF_YEAR, -1);  
java.util.Date yesterday = (Date) cal1.getTime();  
java.sql.Timestamp yesterdayTimestamp = new java.sql.Timestamp(tomorrow.getTime());
which gives me ...

11. Simple date class in Java    stackoverflow.com

Is there a date class in Java which I can construct with a year, month, day, hour, minute, second and millisecond and then do comparisons which give the number of milliseonds ...

12. How to create a calendar object based on current time plus some seconds    stackoverflow.com

I am wondering if I can get a new Calendar object based on current time plus a given timespan, say 5 minutes.

13. Java Date and time    stackoverflow.com

Hey guys im trying to find some info regarding java and the calendar class. I need to write an if statement that says if it is a weekend i.e sat or ...

14. How can I set a Calendar with UTC time?    stackoverflow.com

The posters here say that Date is always in UTC time. However, if I create a Date(), create a Calendar, and set the calendar time with the date, the time ...

15. Calendar - time interval    stackoverflow.com

I have following Java method and it returns String depending on time interval. It works fine when the intervals are like 6-14h.

private String shiftCount()
  Calendar time = Calendar.getInstance();

16. Calendar returning the wrong time    stackoverflow.com

The time displayed is way ahead of what I expected. I'm parsing a date string and turning it into milliseconds.

year = Integer.parseInt(m1.group(1));
mo = Integer.parseInt(m1.group(2));
day = Integer.parseInt(m1.group(3));
hr = Integer.parseInt(m1.group(4));
min = Integer.parseInt(m1.group(5));
sec = ...

17. In Java, what is the fastest way to get the system time?    stackoverflow.com

I'm developing a system that often use the system time because the Delayed interface. What is fastet way to get the time from system? Currently I'm using Calendar.getInstance().getTimeInMillis() every time I need to ...

18. Why do JodaTime and Calendar return different results    stackoverflow.com

Why does this test fail:

    DateTime dateTime = new DateTime(1997,01,01,00,00,00,00, DateTimeZone.UTC);
    long jodaMills = dateTime.getMillis();

    Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));

19. Are there good resources for custom Joda-Time Chronologies?    stackoverflow.com

I'm working on an RPG style game and I want to develop a custom Calendar for the game with unique months, week-days, month lengths, and day lengths. I was planning originally ...

20. Time and Calendar    stackoverflow.com

How do I add/subtract two time objects. I have two time objects (arrival and departure) in format of "yyyy/MMM/dd HH:mm:ss". I need to print the difference between departure and arrival time. ...

21. Millisecond time difference from Calendar too big    stackoverflow.com

I'm trying to compare two millisecond values in Java. One from a calendar, and one from System.currentTimeMillis(). However, it seems the value from the calendar is always far larger than the ...

22. Extract time from Calendar Object    bytes.com

23. Possble Calendar bug with daylight saving time    coderanch.com

So my cell phone rings this morning early and it's support calling to tell me that users are reporting strange errors in the application. When I have a look I find the problem is that we're comparing a date submitted via a web form to a date previously stored. The date submitted is in the format YYYYMMDDhhmm and it looks good ...

24. Getting time from Calendar    coderanch.com

25. Java Calendar Daylight saving / Standard time    coderanch.com

Hello, If I create a Java calendar object with a TimeZone , is it safe to assume according to the current day/call the time printed will be automatically adjusted for daylight saving time and standard time, eg. Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("America/Chicago")); Calendar customerTime = new GregorianCalendar(); customerTime.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND)); System.out.println("Time is ......... "+customerTime.getTime()); Will the above example ...

26. How to manipulate date / time using Calendar and then put the modified data inside the Date class?    coderanch.com

Hi there, I am trying to do the following: (1) Get today's date. (2) Subtract one month from it. (3) Check and see if the actual day is less than a specific number (e.g. 15). (4) Set it back as a Date object with the new day and previous month. For example, if today's date is: April 1, 2010 I want ...

28. Calendar object without time    forums.oracle.com

Thanks for the replies..but my requirement is a calendar object which i need to set in one of the existing bean class set methods which takes in only a calendar object (I cant modify the method signature). I am pasting my code below.. The situation is : I get data from database as a string read from a file which is ...

29. Extract time from Calendar Object    forums.oracle.com

All the API can say is how to use it. If you have more objects to process, it is upto you how to EFFICIENTLY use it.. it also depends on your application requirement.. all you have to do is compare the time between different calendar objects, then you can write a sub routine or a separate class. May be somebody had ...

30. Calendar gets time wrong in Eastern Daylight    forums.oracle.com

If the timezone is actually set to "GMT-5", then no, there is no Daylight Savings Time, as there is no DST in GMT and your timezone is a GMT offset. The timezone needs to be set to "EST" "NorthAmerica/NewYork" (or something like that, see getAvailableIDs for the possible values). The timezone is a system setting, of course.

31. time subtraction within a Calendar instance    forums.oracle.com

32. getting time and hour from calendar    forums.oracle.com

34. Calendar and Daylight Savings Time    forums.oracle.com

I'm trying to use Calendar objects to store month, day, year information for use in date comparisons/calculations. (e.g. how many days between 1/1/06 and 2/1/06) My program knows nothing of hours, seconds, minutes, etc. and it really doesn't care about them. That being said, the concept of hour has been cropping up since Calendar automatically throws in an extra hour here ...

35. Time Difference between 2 Calendar Objects    forums.oracle.com

36. Remove time component and Z from calendar date.    forums.oracle.com

cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal; } I am using the above method to return calendar from string input. the output is coming as 2011-10-10Z or 2011 -10Z or 2011-10-10+01:00 or 2011-10+01:00 I dont want Z or +01:00 to be added to the calendar date, how I can remove that.