how to add a calender field into my application? please suggest.
Create a new tab (Generic tab) using + symbol.
Go to design mode of that tab by clicking on 'Design this Page'
In right panel, you will find 'Calendar Component'. Drag and drop it and then save it.
Thanks and Regards,
my question is How to add calendar field in my application?example - jan2015 - jan 2016
Go to object definition.
Create a field of type Date or Date & Time.
You will get the calendar pop-up to select values for those fields.