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Return the contained value, if present, otherwise throw an exception to be
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Thrown when a program encounters the end of a file or stream during an input
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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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GregorianCalendar is a concrete subclass of Calendarand provides the standard
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HashMap is an implementation of Map. All optional operations are supported.All
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Defines a general exception a servlet can throw when it encounters difficulty.
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