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A Map is a data structure consisting of a set of keys and values in which each
key is mapped to a si
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SortedSet is a Set which iterates over its elements in a sorted order. The order
is determined eithe
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UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
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A java.util.Queue that additionally supports operations that wait for the queue
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Provides Base64 encoding and decoding as defined by RFC 2045.This class
implements section 6.8. Base
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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