- Making http post requests using okhttp
- addToBackStack (FragmentTransaction)
- scheduleAtFixedRate (ScheduledExecutorService)
- getSharedPreferences (Context)
- FileInputStream (java.io)
An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
- URLConnection (java.net)
A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- ArrayList (java.util)
ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- Arrays (java.util)
This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- Servlet (javax.servlet)
Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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