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A class which can consume and produce dates in SQL Date format. Dates are
represented in SQL as yyyy
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HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
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HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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A synchronization aid that allows one or more threads to wait until a set of
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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