- Running tasks concurrently on multiple threads
- getSharedPreferences (Context)
- runOnUiThread (Activity)
- addToBackStack (FragmentTransaction)
- PrintWriter (java.io)
Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
- Comparator (java.util)
A Comparator is used to compare two objects to determine their ordering with
respect to each other.
- TimerTask (java.util)
The TimerTask class represents a task to run at a specified time. The task may
be run once or repeat
- ConcurrentHashMap (java.util.concurrent)
A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
version is based on or
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- ImageIO (javax.imageio)
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