- Running tasks concurrently on multiple threads
- startActivity (Activity)
- getApplicationContext (Context)
- getSharedPreferences (Context)
- File (java.io)
An "abstract" representation of a file system entity identified by a pathname.
The pathname may be a
- FileWriter (java.io)
A specialized Writer that writes to a file in the file system. All write
requests made by calling me
- KeyStore (java.security)
KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
- List (java.util)
An ordered collection (also known as a sequence). The user of this interface has
precise control ove
- Queue (java.util)
A collection designed for holding elements prior to processing. Besides basic
java.util.Collection o
- SortedSet (java.util)
SortedSet is a Set which iterates over its elements in a sorted order. The order
is determined eithe
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