Questions tagged [calendar]
A calendar is a system of reckoning time in which the beginning, length and divisions of a year are defined. The term may refer to a software class or library for the manipulation and display of calendar data, or to a list of events with associated dates and times, managed by a human via an application or operating system user interface.
calendar
13,748
questions
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answers
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Java Date vs Calendar
Could someone please advise the current "best practice" around Date and Calendar types.
When writing new code, is it best to always favour Calendar over Date, or are there circumstances where Date is ...
- 29.1k
381
votes
12
answers
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views
Calendar Recurring/Repeating Events - Best Storage Method
I am building a custom events system, and if you have a repeating event that looks like this:
Event A repeats every 4 days starting on March 3, 2011
or
Event B repeats every 2 weeks on Tuesday ...
- 16.6k
346
votes
18
answers
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views
Why is January month 0 in Java Calendar?
In java.util.Calendar, January is defined as month 0, not month 1. Is there any specific reason to that ?
I have seen many people getting confused about that...
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votes
8
answers
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System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
In Java, what are the performance and resource implications of using
System.currentTimeMillis()
vs.
new Date()
vs.
Calendar.getInstance().getTime()
As I understand it, System....
- 13.3k
253
votes
17
answers
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What's the best way to model recurring events in a calendar application? [closed]
I'm building a group calendar application that needs to support recurring events, but all the solutions I've come up with to handle these events seem like a hack. I can limit how far ahead one can ...
- 7,790
234
votes
11
answers
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Calendar date to yyyy-MM-dd format in java
How to convert calendar date to yyyy-MM-dd format.
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, 1);
Date date = cal.getTime();
SimpleDateFormat format1 = new ...
- 8,380
233
votes
14
answers
441k
views
How to get complete month name from DateTime
What is the proper way to get the complete name of month of a DateTime object?
e.g. January, December.
I am currently using:
DateTime.Now.ToString("MMMMMMMMMMMMM");
I know it's not the correct ...
user728885
228
votes
3
answers
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Converting a Date object to a calendar object [duplicate]
So I get a date attribute from an incoming object in the form:
Tue May 24 05:05:16 EDT 2011
I am writing a simple helper method to convert it to a calendar method, I was using the following code:
...
- 8,544
222
votes
10
answers
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How to subtract X day from a Date object in Java?
I want to do something like:
Date date = new Date(); // current date
date = date - 300; // substract 300 days from current date and I want to use this "date"
How to do it?
- 3,218
210
votes
9
answers
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Convert String to Calendar Object in Java
I am new to Java, usually work with PHP.
I am trying to convert this string:
Mon Mar 14 16:02:37 GMT 2011
Into a Calendar Object so that I can easily pull the Year and Month like this:
String ...
- 12.4k
202
votes
11
answers
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How to subtract X days from a date using Java calendar?
Anyone know a simple way using Java calendar to subtract X days from a date?
I have not been able to find any function which allows me to directly subtract X days from a date in Java. Can someone ...
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199
votes
22
answers
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Number of days in particular month of particular year?
How to know how many days has particular month of particular year?
String date = "2010-01-19";
String[] ymd = date.split("-");
int year = Integer.parseInt(ymd[0]);
int month = Integer.parseInt(ymd[1])...
- 15.8k
199
votes
8
answers
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Java: Get month Integer from Date
How do I get the month as an integer from a Date object (java.util.Date)?
- 25.2k
185
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11
answers
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Programmatically add custom event in the iPhone Calendar
Is there any way to add iCal event to the iPhone Calendar from the custom App?
- 9,473
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votes
28
answers
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How do I calculate someone's age in Java?
I want to return an age in years as an int in a Java method.
What I have now is the following where getBirthDate() returns a Date object (with the birth date ;-)):
public int getAge() {
long ...
- 3,558