- Running tasks concurrently on multiple threads
- getSystemService (Context)
- onCreateOptionsMenu (Activity)
- getSharedPreferences (Context)
- BitSet (java.util)
The BitSet class implements abit array [http://en.wikipedia.org/wiki/Bit_array].
Each element is eit
- Collections (java.util)
This class consists exclusively of static methods that operate on or return
collections. It contains
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- TreeMap (java.util)
Walk the nodes of the tree left-to-right or right-to-left. Note that in
descending iterations, next
- BlockingQueue (java.util.concurrent)
A java.util.Queue that additionally supports operations that wait for the queue
to become non-empty
- IOUtils (org.apache.commons.io)
General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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