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Return the contained value, if present, otherwise throw an exception to be
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A Properties object is a Hashtable where the keys and values must be Strings.
Each property can have
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An Executor that provides methods to manage termination and methods that can
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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Factory for creating Log instances, with discovery and configuration features
similar to that employ
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A collection that associates an ordered pair of keys, called a row key and a
column key, with a sing
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