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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 controller for the selection of SelectableChannel objects. Selectable channels
can be registered w
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Factory that creates instances of DateTimeFormatter from patterns and styles.
Datetime formatting i
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A component is an object having a graphical representation that can be displayed
on the screen and t
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