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Wraps either an existing OutputStream or an existing Writerand provides
convenience methods for prin
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Factory and utility methods for Executor, ExecutorService,
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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A Window object is a top-level window with no borders and no menubar. The
default layout for a windo
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