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Return the contained value, if present, otherwise throw an exception to be
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Allows reading from and writing to a file in a random-access manner. This is
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A controller for the selection of SelectableChannel objects. Selectable channels
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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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An ordered collection (also known as a sequence). The user of this interface has
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
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