Developers and programmers are choosing ArrayList over traditional Java arrays. And, do you know why? The most obvious reason is that an ArrayList in Java is resizable. Unlike standard arrays, an ArrayList grows upon the addition of new elements. An array is fixed in size, and once it is full, you cannot add more items to it.

On the contrary, an ArrayList in Java dynamically grows and shrinks, allowing more flexibility and functionality as compared to the standard arrays. Let us learn more about ArrayList and why they are preferred to regular Java arrays.

What is ArrayList in Java?

An ArrayList is a class in Java that extends AbstractList and executes the List interface of Java. A collection of dynamic elements in size and behavior requires a data structure that can handle its growth and shrinkage to add and remove elements, respectively.

An ArrayList in Java provides support for such a resizable list of elements with the freedom of addition, removal, finding, sorting, and replacement of objects in the list. As mentioned previously, an ArrayList will automatically stretch on the addition of new elements and reduce in size when elements are removed.

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