- Making http post requests using okhttp
- getExternalFilesDir (Context)
- onRequestPermissionsResult (Fragment)
- onCreateOptionsMenu (Activity)
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A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- ExecutorService (java.util.concurrent)
An Executor that provides methods to manage termination and methods that can
produce a Future for tr
- HttpServletRequest (javax.servlet.http)
Extends the javax.servlet.ServletRequest interface to provide request
information for HTTP servlets.
- DataSource (javax.sql)
An interface for the creation of Connection objects which represent a connection
to a database. This
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