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Return the contained value, if present, otherwise throw an exception to be
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An "abstract" representation of a file system entity identified by a pathname.
The pathname may be a
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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
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KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
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Uses a one-way hash function to turn an arbitrary number of bytes into a
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HashMap is an implementation of Map. All optional operations are supported.All
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