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Calendar is an abstract base class for converting between a Date object and a
set of integer fields
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Vector is an implementation of List, backed by an array and synchronized. All
optional operations in
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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General file manipulation utilities. Facilities are provided in the following
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This is the central class in the log4j package. Most logging operations, except
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