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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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Signals a general, I/O-related error. Error details may be specified when
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A controller for the selection of SelectableChannel objects. Selectable channels
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Collection is the root of the collection hierarchy. It defines operations on
data collections and t
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A parser that parses a text string of primitive types and strings with the help
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A java.util.Queue that additionally supports operations that wait for the queue
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