This activity will be about ArrayList, HashSet, and HashMap implementation. 1st Activity implement an ArrayList and HashSet Ask for user input 5 times, and then add the values into the ArrayList and ...

Java Collection means a single unit of objects. Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes (ArrayList, Vector, LinkedList, PriorityQueue, HashSet, ...

The most common approaches to removing duplicates from a List in Java include the following: A brute force comparison using nested loops. The use of a HashSet to find the unique duplicates. A combined ...