Java Pocket Guide, 4e by Robert Liguori and Patricia Liguori

Author:Robert Liguori and Patricia Liguori
Language: eng
Format: mobi, pdf
Publisher: O'Reilly Media, Inc.
Published: 2017-08-24T16:00:00+00:00

Collections are objects that group multiple elements and store, retrieve, and manipulate those elements. The Collection interface is at the root of the collection hierarchy. Subinterfaces of Collection include List, Queue, and Set. Table 15-1 shows these interfaces and whether they are ordered or allow duplicates. The Map interface is also included in the table, as it is part of the framework.

Table 15-1. Common collections Interface Ordered Dupes Notes

List

Yes

Yes

Positional access; element insertion control

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