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A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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A collection designed for holding elements prior to processing. Besides basic
java.util.Collection o
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A Set is a data structure which does not allow duplicate elements.
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Factory and utility methods for Executor, ExecutorService,
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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