Develop Reference

Date picker Dialog shows only one date

I am trying to implement the date picker dialog but the dialog appears with just a single date and show rest of the date as blank what could be the reason?

This is definitely a Theme issue. The selected date is visible because of the contrast in text color and circle color. You can refer this link for understanding the anatomy of the Date Picker theme by the Material design guideline.
https://material.io/components/date-pickers#theming
Refer this answer for understanding which colors to use.
https://stackoverflow.com/a/29014475/4491971
You can use these attributes to change the colors via style
dayOfWeekBackground
dayOfWeekTextAppearance
headerMonthTextAppearance
headerDayOfMonthTextAppearance
headerYearTextAppearance
headerSelectedTextColor
yearListItemTextAppearance
yearListSelectorColor
calendarTextColor
calendarSelectedTextColor
If you share the current style and the code snippet, we can refine the answer more.

Adding an event to particular date on calendar and want to highlight that date

In my android app, I have an Activity by name AddEventActivity in which I'm adding an event with a date and save it on local storage(SQLite). Now I want to show that event on calendar with highlight.
The link which I'm following is
here
So please help me out.

Try a Custom Calendar....it is much easier and compact than you think : https://www.toptal.com/android/android-customization-how-to-build-a-ui-component-that-does-what-you-want
Thanks to AHMED AL-AMIR. I use it in this App.

You can use Decorators to add events to the Calendar view library you are using.
For more information check their documentation:
https://github.com/prolificinteractive/material-calendarview/blob/master/docs/DECORATORS.md

JDateChooser is not displaying any dates

I am using the below library JDateChooser, which is a Date Picker GUI which we can put into Netbeans pallet.
http://plugins.netbeans.org/plugin/658/jdatechooser-1-2
However this do not display any dates. Dates are empty. Below is the image.
I do not have to post the code here, because I did nothing other than dragging and dropping the GUI element. Can someone please tell me why this is happening?

JDateChooser from vadimig doesn't seem to work with Nimbus, seems to work okay for Windows look and feel, you'd have to test it with the other system looks feels.
Either change the component you are using or change the look and feel you are using

The problem is the width of the component, just increase that value.
If your DateChooserCombo is called chooserDate, it must be like this:
Dimension size = chooserDate.getCalendarPreferredSize();<br>
size.width += 90;<br>
chooserDate.setCalendarPreferredSize(size);<br>

Calendar in wicket

I would like to have a small brief calendar in wicket.
DatePicker is a component which has textField, and calendar is being shown for short period of time, until you select date.
But I need permanent calendar, like in Outlook.
Wicket FullCalendar is very large for me, I need the one of datePicker format.
There is such component, or no?

I don't think, there's a readymade component in core wicket for that. But it should be pretty easy to roll your own. Here are a few ideas on that:
Grab the DatePicker and extract the calender from there (Note that the DatePicker uses YUI internally).
Have a look at the WijCalendar component from the WiQuery project
just render the values as a table, apply CSS and let jQuery's Themeroller have a go.

Recently I needed such a calendar widget too. But couldn't find one. The Wicket calendar picker is based on the YUI component. Despite the base component supports inline display I couldn't find any parameter for the wicket date picker that triggers this mode.
Finally I came up with writing my own simple component. It uses the JQueryUI calendar widget.

Take also a look at Webical project. It's written in Wicket and it has what you need in its GUI: http://code.google.com/p/webical/wiki/Screenshots

Date Time Picker like in Windows

I am looking for a component for Swing that would do the same thing that Windows 7 date and time pickers do (or be even better). They look so:
And have following features I need:
you cannot enter an invalid value (value is ignored as you type and not when you leave the field)
it allows continuous updating of the field until the first change made by user (take a look on the time setting in Windows 7)
you can select and change at once only one position - not the whole text at once (so colons and points cannot be removed)
up and down buttons
calendar button (but it's rather optional for me)
I have tried JSpinner with a DateEditor but it doesn't have this features. JXDatePicker only adds the calendar button.
Generally I am looking for a nice way to let user enter date and time in a powerful and simple way. Windows 7 solution seems to be quite good.
Thank you!

best and free DatePickers around are JXDatePicker and JCalendar, in both cases are there focus about correct implementations of Date and Focus workaround, and excelent Renderer and Editor for JTree / JTreeTable / JTable
to your needs ---> all these funcionalities are implemented by default, not clear from your questions exactly whats wrong, I'm Win7 and JXDatePicker and JCalendar but I never saw these issues,
in both cases you have to implementing own workaround for SpecialDays as hollydays (and etc),