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Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
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A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
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HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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A task that returns a result and may throw an exception. Implementors define a
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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A relational table
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