- Running tasks concurrently on multiple threads
- getSystemService (Context)
- onRequestPermissionsResult (Fragment)
- scheduleAtFixedRate (Timer)
- ConnectException (java.net)
A ConnectException is thrown if a connection cannot be established to a remote
host on a specific po
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- Handler (java.util.logging)
A Handler object accepts a logging request and exports the desired messages to a
target, for example
- ServletException (javax.servlet)
Defines a general exception a servlet can throw when it encounters difficulty.
- DataSource (javax.sql)
An interface for the creation of Connection objects which represent a connection
to a database. This
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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