- Making http post requests using okhttp
- startActivity (Activity)
- getExternalFilesDir (Context)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- FileNotFoundException (java.io)
Thrown when a file specified by a program cannot be found.
- PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- TimeZone (java.util)
TimeZone represents a time zone offset, and also figures out daylight savings.
Typically, you get a
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