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- getSupportFragmentManager (FragmentActivity)
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KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Option (scala)
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