- Making http post requests using okhttp
- getExternalFilesDir (Context)
- onCreateOptionsMenu (Activity)
- getSystemService (Context)
- InputStreamReader (java.io)
A class for turning a byte stream into a character stream. Data read from the
source input stream is
- ServerSocket (java.net)
This class represents a server-side socket that waits for incoming client
connections. A ServerSocke
- URL (java.net)
A Uniform Resource Locator that identifies the location of an Internet resource
as specified by RFC
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- TimerTask (java.util)
The TimerTask class represents a task to run at a specified time. The task may
be run once or repeat
- CountDownLatch (java.util.concurrent)
A synchronization aid that allows one or more threads to wait until a set of
operations being perfor
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