Stack

The concept of a stack is a classic data structure that has a wide range of applications in software development. Whether you're dealing with expression evaluation, backtracking algorithms, or managing function calls, understanding stacks is crucial.

Think of a stack as a collection of items arranged in a specific order, where the last item added is the first one to be removed—just like a stack of plates in a cafeteria. The last plate placed on the stack is the first one you take when you're hungry.

In this chapter, we’ll dive deep into the Stack class in Java, examining how it works, its key methods, and exploring practical use cases and code examples.