What is the purpose of Vector in Java?

Vector in Java is a dynamic array that can automatically grow and shrink. Its main purposes include:

1. Storage and management of objects: Vectors can store objects of any type, and elements can be dynamically added, removed, and accessed as needed.
2. Implementing thread-safe operations: Vector is thread-safe, allowing multiple threads to operate on the same Vector simultaneously, making it suitable for multi-threaded environments.
3. The list function is achieved through the implementation of Vector, which implements the List interface and allows for operations like adding, deleting, modifying, and querying using its provided methods.
4. Expansion and contraction: Vector can automatically expand and shrink according to needs, allowing for flexible management of storage space.
5. Using Vector as the underlying data structure, you can implement stacks and queues by utilizing its methods such as push, pop, enqueue, and dequeue.

In conclusion, the main purpose of Vector in Java is to serve as a dynamic array for storing and managing objects, while also offering thread-safe operations and list functionalities.