- Making http post requests using okhttp
- getContentResolver (Context)
- scheduleAtFixedRate (ScheduledExecutorService)
- getResourceAsStream (ClassLoader)
- PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
- RandomAccessFile (java.io)
Allows reading from and writing to a file in a random-access manner. This is
different from the uni-
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- Dictionary (java.util)
Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
- Scanner (java.util)
A parser that parses a text string of primitive types and strings with the help
of regular expressio
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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