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Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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A writable sink for bytes.Most clients will use output streams that write data
to the file system (
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Provides access to system-related information and resources including standard
input and output. Ena
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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Is the value null?
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