- Running tasks concurrently on multiple threads
- getApplicationContext (Context)
- startActivity (Activity)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- Thread (java.lang)
A thread is a thread of execution in a program. The Java Virtual Machine allows
an application to ha
- DecimalFormat (java.text)
A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
- MessageFormat (java.text)
Produces concatenated messages in language-neutral way. New code should probably
use java.util.Forma
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- LinkedList (java.util)
Doubly-linked list implementation of the List and Dequeinterfaces. Implements
all optional list oper
- 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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