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Return the contained value, if present, otherwise throw an exception to be
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This exception is thrown when a program attempts to create an URL from an
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Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
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A legacy iteration interface.New code should use Iterator instead. Iterator
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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