- Making http requests using okhttp
- scheduleAtFixedRate (Timer)
- requestLocationUpdates (LocationManager)
- getSharedPreferences (Context)
- BufferedReader (java.io)
Wraps an existing Reader and buffers the input. Expensive interaction with the
underlying reader is
- PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- ArrayList (java.util)
ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
- JOptionPane (javax.swing)
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