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Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
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HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
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A Set is a data structure which does not allow duplicate elements.
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Patterns are compiled regular expressions. In many cases, convenience methods
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A flow layout arranges components in a left-to-right flow, much like lines of
text in a paragraph. F
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