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The abstract base class for all number formats. This class provides the
interface for formatting and
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A PriorityQueue holds elements on a priority heap, which orders the elements
according to their natu
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The Manifest class is used to obtain attribute information for a JarFile and its
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General IO stream manipulation utilities. This class provides static utility
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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