- Running tasks concurrently on multiple threads
- getExternalFilesDir (Context)
- onRequestPermissionsResult (Fragment)
- getSupportFragmentManager (FragmentActivity)
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Properties (java.util)
A Properties object is a Hashtable where the keys and values must be Strings.
Each property can have
- ExecutorService (java.util.concurrent)
An Executor that provides methods to manage termination and methods that can
produce a Future for tr
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- IsNull (org.hamcrest.core)
Is the value null?
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