- Running tasks concurrently on multiple threads
- onCreateOptionsMenu (Activity)
- runOnUiThread (Activity)
- addToBackStack (FragmentTransaction)
- 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
- Timer (java.util)
Timers schedule one-shot or recurring TimerTask for execution. Prefer
java.util.concurrent.Scheduled
- BlockingQueue (java.util.concurrent)
A java.util.Queue that additionally supports operations that wait for the queue
to become non-empty
- Collectors (java.util.stream)
- Component (java.awt)
A component is an object having a graphical representation that can be displayed
on the screen and t
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