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|Java - Interview Questions and Answers|
|Ans. HashSet is maintained as HashMap by Java with values of the HashSet as Keys of the HashMap and value of the HashMap as the constant PRESENT.|
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|In what order the elements of a HashSet are retrieved ?|
|Difference beween HashSet and TreeSet ?|
|Which of the following is insertion heavy - HashSet or TreeSet ?|
|Difference between ArrayList and HashSet ?|
|Which interface is used for hashset implementation ?|