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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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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
- Locale (java.util)
Locale represents a language/country/variant combination. Locales are used to
alter the presentatio
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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