- Making http requests using okhttp
- putExtra (Intent)
- scheduleAtFixedRate (Timer)
- getApplicationContext (Context)
- SocketException (java.net)
This SocketException may be thrown during socket creation or setting options,
and is the superclass
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- Manifest (java.util.jar)
The Manifest class is used to obtain attribute information for a JarFile and its
entries.
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- VirtualMachine (com.sun.tools.attach)
A Java virtual machine.
A VirtualMachine represents a Java virtual machine to which this Java vir
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