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An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
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An URLConnection for HTTP (RFC 2616 [http://tools.ietf.org/html/rfc2616]) used
to send and receive d
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An interface for an object which represents a database table entry, returned as
the result of the qu
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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