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A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
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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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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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Vector is an implementation of List, backed by an array and synchronized. All
optional operations in
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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