- Making http requests using okhttp
- addToBackStack (FragmentTransaction)
- getSupportFragmentManager (FragmentActivity)
- getSystemService (Context)
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- UUID (java.util)
UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- DataSource (javax.sql)
An interface for the creation of Connection objects which represent a connection
to a database. This
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