- Running tasks concurrently on multiple threads
- putExtra (Intent)
- findViewById (Activity)
- setContentView (Activity)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- KeyStore (java.security)
KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
- NumberFormat (java.text)
The abstract base class for all number formats. This class provides the
interface for formatting and
- SimpleDateFormat (java.text)
Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
into a String, and pa
- Stream (java.util.stream)
A sequence of elements supporting sequential and parallel aggregate operations.
The following exampl
- Container (java.awt)
A generic Abstract Window Toolkit(AWT) container object is a component that can
contain other AWT co
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