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Im looking for the best way to complete a certain task when a certain date is reached. What is the best way to a achieve this?
ie. 1st of each month I run command y
Use AlarmManager. You'll also need a BroadcastReceiver for the BOOT_COMPLETED message so you can restart the alarm if the phone is rebooted. TO calculate when the 1st day of the next month is, use the Calendar class- get the Calendar for now, then add 1 to the month and set the day to 1. Then you can convert that to ms for the alarm.
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In a Java project, I get the date using the method:
LocalDateTime.now() // 2023-02-19T00:52:49.177123900
This is the correct date.
I insert this date into the database.
If you look at this date in the database, it will be different:
2023-02-18 13:52:49.177124
This is not the correct date.
Why does this happen and how can I fix it?
MySql server shows the correct time, the same as the LocalDateTime.now() method.
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So if user click on disable button should be some flag active for 24 hours that it is disabled and customers do not see the app, then it is automatically re-enabled so it is visible again.
I would like this may be to be a boolean, but not sure,
So is there any simple fix for this or I should control in page load if this true or false, but still I need this somehow to measure the hours, passing so I can show the user in the dynamic way how hours are left, Thanks, and I would appreciate any idea you might have.
In Spring,You can use #Scheduled annotation to execute a function periodically, even user hasn't done any click actions.
#Scheduled(cron = "0 0 12 * * ? 2019")
public void runIt(){
//write something to execute periodically
}
The above scheduler run At 12:00 pm (noon) every day during the year 2019.
For setting your own schedule you can refer
Scheduled
and
Cron params
Or
If you want call a method only after an action, you can use the Java Timer and TimerTask Classes refer this link Java Timer Task
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That's my first project when I use regex and I have a little problem when I'm validating email. I use the following formula: ^[0-9]{5,6}+(#student\\\.de)|(#teacher\\\.de) (it starts with 5 or 6 numbers and then are two alternative domains). But it's still doesn't work and I can't find the mistake in the formula. Could anyone help me?
Try
^[0-9]{5,6}#(student|teacher)\.de$
This assumes that you want a five or six digit number (possibly with proceeding zeros) followed by an at sign followed by either the student or the teacher domain.
I whould like to use ^[0-9]{5,6}#(teacher|student)\.de instead, which mean start with 5 or 6 degits followed by #teacher.de or #student.de
regex demo
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I have one Android calendar with four View
options:Week view, Month view, Day View and Agenda view.
I want to show Today in the list of Agenda view even if there is no event Attached to Today. I have tried to check whether any event exist for today or not. But if i add extra data forcefully i get nullpointer exception. Below is the view of Calendar Agenda view.
I have one stickyheader listview to show list of events. Able to display all the days with event. But my question is : How to show Today even there is no event with "No event for today create now option".
Any help will be appreciated.
Have used https://github.com/Etar-Group/Etar-Calendar/tree/master/src/com/android/calendar/agenda for displaying and loading events.
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I'm creating an app, which can show the times of different cities. I have an api which takes coordinates and gives me something like - America/Chicago. But I want to show this on a Digital Clock. Can someone please tell me how to change the timezone of a DigitalClock, or make a custom one. I have no clue! Thanks for the help!
Android: DigitalClock remove seconds
customized digital clock in android
I assume you can then work out how much time to add/subtract from the system's time to show the destination's time.
Do you mean by like a digital clock as in a widget? You're going to need to give more information about it.
You can try doing a textview in an activity and set it to change every minute or hour by getting the time from this class
from Android API.