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Calendar is an abstract base class for converting between a Date object and a
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A map that has its keys ordered. The sorting is according to either the natural
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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An interface for the creation of Connection objects which represent a connection
to a database. This
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General file manipulation utilities. Facilities are provided in the following
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Defines the contract between a returned instance and the runtime when an
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