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Return the contained value, if present, otherwise throw an exception to be
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This class contains various methods for manipulating arrays (such as sorting and
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A java.util.Queue that additionally supports operations that wait for the queue
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The exception that is thrown when a handshake could not be completed
successfully.
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Defines a general exception a servlet can throw when it encounters difficulty.
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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
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