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|Interview Questions and Answers|
|Ans. ArrayList is a list , i.e an implementation of List interface whereas HashSet is a Set and an implementation of Set interface.|
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|Like Discuss Correct / Improve  arraylist  hashset|
|In what order the elements of a HashSet are retrieved ?|
|Difference beween HashSet and TreeSet ?|
|How is HashSet maintained in memory by Java ?|
|Which of the following is insertion heavy - HashSet or TreeSet ?|
|Which interface is used for hashset implementation ?|