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Return the contained value, if present, otherwise throw an exception to be
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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
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An interface for an object which represents a database table entry, returned as
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Note: Do not use this class since it is obsolete. Please use the Map interface
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A parser that parses a text string of primitive types and strings with the help
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General file manipulation utilities. Facilities are provided in the following
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