- Making http post requests using okhttp
- getSharedPreferences (Context)
- onCreateOptionsMenu (Activity)
- addToBackStack (FragmentTransaction)
- BigDecimal (java.math)
An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Window (java.awt)
A Window object is a top-level window with no borders and no menubar. The
default layout for a windo
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