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An output stream that writes bytes to a file. If the output file exists, it can
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TreeSet is an implementation of SortedSet. All optional operations (adding and
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A TimeUnit represents time durations at a given unit of granularity and provides
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A sequence of elements supporting sequential and parallel aggregate operations.
The following exampl
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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