Collections in Java - javatpoint
https://www.javatpoint.com/collections-in-java
WebJava Collections can achieve all the operations that you perform on a data such as searching, sorting, insertion, manipulation, and deletion. 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 ...
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