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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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An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
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A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
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This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- UUID (java.util)
UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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A collection that associates an ordered pair of keys, called a row key and a
column key, with a sing
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