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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 connection represents a link from a Java application to a database. All SQL
statements and results
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A parser that parses a text string of primitive types and strings with the help
of regular expressio
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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The Color class is used to encapsulate colors in the default sRGB color space or
colors in arbitrary
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A Rectangle specifies an area in a coordinate space that is enclosed by the
Rectangle object's top-
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