I need a solution to get the next Sunday's date, please no "Calendar" I am using GWT and it does not compile.. too many errors. I need an alternate solution... I am kind of new to java and have spent two days "just" trying to programatically get the next Sundays date.. Please help me (No Calendar Class please)
Regards
You want a perpetual calendar algorithm. Several are outlined here: http://en.wikipedia.org/wiki/Calculating_the_day_of_the_week
Related
I'm looking for a possibility similar to the DatePickerDialog to select calendar weeks.
It is important that this also allows spanning calendar weeks (15-20).
The current rudimentary solution is a text field that the user fills in, but this creates a lot of potential for bugs.
Is there a way to modify the DatePicker accordingly? I haven't found much in the Android Developers documentation.
Final input should be possible in the format: 15-20, 23, 25-30. (representing calendar weeks)
I am a beginner in Java programming and I am using Netbeans. I want to change the Date format of the Microba date picker to "dd-MMM-yy" and also remove the remaining fields. How to do these things?
Thank you.
Since Microba DataPicker is open source you could just clone the repo and have a look at the source code for your self.
If you have a look at the source code for the DatePicker class you will notice a number constructors which you can use to customise the picker, several take a DateFormat class which you can use to modify the format of the date value.
If you don't know how to use DateFormat, then I recommend you take a look at SimpleDateFormat, there are countless examples available to show you how to use it
As to remove elements, you'd have to look closer at the source code and make determinations on how best that might be achieved, since I'm not sure what fields you're talking about.
I am using primefaces calendar. I want to select a week instead of selecting a day.
I found out it was possible in primefaces 2.0 to have an array of days in backbean instead of one date object. I am using version 4 and it is not possible anymore. I was thinking if i could use the week number as the pattern and use the popup calendar it will show the week number in the text field. However it worked first time i tried, but second time i want to choose a date it will only display "w". Is the anyway to make this work?
i was thinking to use a converter which convert the week number to a date because my theory is that calendar cant convert the week number to date by it self. I am not familiar using converters? I will appreciate any help.
<p:calendar value="#{bean.date}" locale="en" pattern="w">
I'm downloading a certain website in html format to my device, so that I can display it in webview in offline mode. The only problem is that the link is dynamic, and it changes once a week. To keep the html item updated as much as possible, I want the app to download it once a week.
Let's say for example that this is the websites address:
www.mywebsite.com/1
Next week, the address will be:
www.mywebsite.com/2
And week after that, the website will be:
www.mywebsite.com/3
I already figured I would do this be declaring a variable that would be changing, something like
int week;
String urlToDownload = "www.mywebsite.com/" + week;
But how do I make it so that this variable will change everyday even if the app is not started, or is there a better way to do this?
You can maybe use AlarmManager class. That allows you to plan something on the background, when app is not even running.
I would use the most simple solution. Do you know what time does the URL change? You can always check the time of previous start of application and when next app is started check it and determine how many weeks is from that.
Use the java.util.Calendar
Calendar calender = Calendar.getInstance();
MyLog.d("Current Week:", "" + calender.get(Calendar.WEEK_OF_YEAR));
This prints "Current Week: 37"
With that maybe you can write code to get the appropriate page. The week nr are kind of static
You can update the variable during the onStart() phase. Make a constant that has the start date, and then get the current date and figure out the offset. This way even if the app hasnt been started in a long time, once it is started you will have the proper link.
Anyone know of a (reliable) date recurrence calculator, we're trying
to implement something in our app which would allow a schedule to be
created, similar to those for recurring meetings in Outlook. We have
tried chronos but discovered some cases where it breaks down, I'd
really appreciate knowing if anyone has successfully used any of the
other options out there.
Cheers,
Robin
This is a frequent question on the joda time mailing list and the usual answer is to try RFC 2445. Disclaimer: I have not used it myself.
Check out Lamma date (I wrote it recently), which is designed to generate dates based on a recurrence pattern.
For example:
import static io.lamma.LammaJavaImports.*;
Dates.from(2010, 1, 1).to(2019, 12, 31).byYears(3).on(Locators.nth(3, FRIDAY).of(FEBRUARY)).build();
will generate the third Friday of February for every 3 years in 2010s
Output:
List(2010-02-19, 2013-02-15, 2016-02-19, 2019-02-15)
Check out Quartz, it's a really handy tool:
http://www.quartz-scheduler.org/