- Running tasks concurrently on multiple threads
- scheduleAtFixedRate (ScheduledExecutorService)
- getContentResolver (Context)
- getExternalFilesDir (Context)
- URLConnection (java.net)
A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- UnknownHostException (java.net)
Thrown when a hostname can not be resolved.
- Timestamp (java.sql)
A Java representation of the SQL TIMESTAMP type. It provides the capability of
representing the SQL
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- SortedMap (java.util)
A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
- GridBagLayout (java.awt)
The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
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