- Creating JSON documents from java classes using gson
- requestLocationUpdates (LocationManager)
- getSystemService (Context)
- scheduleAtFixedRate (Timer)
- FileOutputStream (java.io)
An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
- SQLException (java.sql)
An exception that indicates a failed JDBC operation. It provides the following
information about pro
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- 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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