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This implementation is efficient f
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A charset is a named mapping between Unicode characters and byte sequences.
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Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
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A Properties object is a Hashtable where the keys and values must be Strings.
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TreeSet is an implementation of SortedSet. All optional operations (adding and
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A java.util.Queue that additionally supports operations that wait for the queue
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