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Return the contained value, if present, otherwise throw an exception to be
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Wraps either an existing OutputStream or an existing Writerand provides
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An ordered collection (also known as a sequence). The user of this interface has
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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A Java virtual machine.
A VirtualMachine represents a Java virtual machine to which this Java vir
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A Rectangle specifies an area in a coordinate space that is enclosed by the
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