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Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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A readable source of bytes.Most clients will use input streams that read data
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Wraps either an existing OutputStream or an existing Writerand provides
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A class which can consume and produce dates in SQL Date format. Dates are
represented in SQL as yyyy
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The abstract base class for all number formats. This class provides the
interface for formatting and
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HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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