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What Is a List?

Explore the fundamentals of the List data structure in Java, focusing on the List interface and ArrayList implementation. Learn how to create lists, add or remove elements, access items by index, and work with 2D lists for grid-like data structures. This lesson equips you with essential skills to manipulate lists efficiently in Java.

Introduction to lists

Lists are a fundamental data structure in Java that allow us to store and manipulate collections of elements. They provide dynamic sizing, efficient insertion and deletion operations, and easy access to elements by index. In this lesson, we’ll explore the List interface in Java and its implementations, such as ArrayList.

List interface

The List interface in Java is part of the java.util package and extends the Collection interface. It represents an ordered collection of elements where each element has a specific index. Some key features of the List interface include:

  • Ordered collection: Elements in a List maintain the ...