- Running tasks concurrently on multiple threads
- addToBackStack (FragmentTransaction)
- getExternalFilesDir (Context)
- notifyDataSetChanged (ArrayAdapter)
- FileOutputStream (java.io)
An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Map (java.util)
A Map is a data structure consisting of a set of keys and values in which each
key is mapped to a si
- NoSuchElementException (java.util)
Thrown when trying to retrieve an element past the end of an Enumeration or
Iterator.
- TreeMap (java.util)
Walk the nodes of the tree left-to-right or right-to-left. Note that in
descending iterations, next
- Collectors (java.util.stream)
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