- Running tasks concurrently on multiple threads
- getExternalFilesDir (Context)
- getContentResolver (Context)
- onRequestPermissionsResult (Fragment)
- Permission (java.security)
Legacy security code; do not use.
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- ArrayList (java.util)
ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- UUID (java.util)
UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
- Container (java.awt)
A generic Abstract Window Toolkit(AWT) container object is a component that can
contain other AWT co
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