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An output stream that writes bytes to a file. If the output file exists, it can
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A Uniform Resource Identifier that identifies an abstract or physical resource,
as specified by RFC
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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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A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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