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Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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Is the value null?
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