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The abstract base class for all number formats. This class provides the
interface for formatting and
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The BitSet class implements abit array [http://en.wikipedia.org/wiki/Bit_array].
Each element is eit
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Calendar is an abstract base class for converting between a Date object and a
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An int value that may be updated atomically. See the java.util.concurrent.atomic
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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