- Running tasks concurrently on multiple threads
- getContentResolver (Context)
- getExternalFilesDir (Context)
- runOnUiThread (Activity)
- FileWriter (java.io)
A specialized Writer that writes to a file in the file system. All write
requests made by calling me
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- Enumeration (java.util)
A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- UUID (java.util)
UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
- ConcurrentHashMap (java.util.concurrent)
A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
version is based on or
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