- Running tasks concurrently on multiple threads
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- getSystemService (Context)
- getApplicationContext (Context)
- Thread (java.lang)
A thread is a thread of execution in a program. The Java Virtual Machine allows
an application to ha
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- ArrayList (java.util)
ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- BorderLayout (java.awt)
A border layout lays out a container, arranging and resizing its components to
fit in five regions:
- Graphics2D (java.awt)
This Graphics2D class extends the Graphics class to provide more sophisticated
control overgraphics
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