What is one advantage of using ArrayLists over arrays?

One significant advantage of using ArrayLists over arrays is that they automatically resize when adding new elements. Unlike traditional arrays, which have a fixed size determined at the time of their creation, ArrayLists dynamically adjust their capacity as elements are added or removed. This feature allows for greater flexibility in managing collections of data since users do not need to know in advance how many elements they will require. As you add items to an ArrayList, it will automatically increase its size to accommodate the new elements, simplifying the management of dynamic data sets.

The ability to resize means that developers can focus more on functionality and less on the constraints of static arrays, which can lead to more efficient and effective coding practices. This dynamic resizing capability is particularly useful for applications where the number of items is unpredictable or may frequently change, providing a significant advantage in many real-world scenarios.