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Wraps either an existing OutputStream or an existing Writerand provides
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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
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A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
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A Set is a data structure which does not allow duplicate elements.
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