Java: Iteration and Traversal

Different collections have varying iteration performance due to their internal structure.

The iteration performance of a collection is influenced by its underlying data structure. For instance, iterating over a `LinkedList` is generally slower than an `ArrayList` due to the node-based nature of linked lists, which require pointer traversal. In contrast, an `ArrayList` benefits from contiguous memory storage, allowing faster access. Understanding these differences is crucial when selecting collections for performance-critical applications, such as streaming a catalog of thousands of products in an e-commerce system.