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Wraps either an existing OutputStream or an existing Writerand provides
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
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An iterator over a sequence of objects, such as a collection.If a collection has
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A map that has its keys ordered. The sorting is according to either the natural
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
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General file manipulation utilities. Facilities are provided in the following
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