Package java.util

Interface List

The interface List is an ordered collection. The user of this interface has precise control over where in the list each element is inserted. The user can access elements by their integer index, and search for elements in the list.

It is allowed to duplicate elements. More formally, lists typically allow pairs of elements e1 and e2 such that e1.equals(e2), and they typically allow multiple null elements if they allow null elements at all. It is not inconceivable that someone might wish to implement a list that prohibits duplicates, by throwing runtime exceptions when the user attempts to insert them, but we expect this usage to be rare.

Use the concrete implementations ArrayList and LinkedList.

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Public Methods