- Creating JSON documents from java classes using gson
- getExternalFilesDir (Context)
- runOnUiThread (Activity)
- onRequestPermissionsResult (Fragment)
- NumberFormat (java.text)
The abstract base class for all number formats. This class provides the
interface for formatting and
- Comparator (java.util)
A Comparator is used to compare two objects to determine their ordering with
respect to each other.
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- SortedMap (java.util)
A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- ReentrantLock (java.util.concurrent.locks)
A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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