Write a program to find duplicate elements in a List.
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Loop through each element in the List and insert each element HashSet class. We will get false for every element which is duplicate while inserting into the HashSet class. …
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1). How to retrieve elements from Collections ?
There are following way to traverse/retrieve the elements from Collections …
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1). What is a collection framework ?
A collection framework is a class library to handle group of objects. Collection framework is implemented in java.util.package which gives you lists, sets, maps and queue to satisfy most of your coding needs.