Java Vector Guide: Purpose & Functions

Vectors in Java are dynamic arrays that are similar to ArrayLists but support synchronized access. They are used in situations where multiple objects need to be stored and manipulated. Vectors automatically resize to accommodate added or removed elements and provide methods for manipulating elements, such as adding, removing, finding, and inserting.

The functions of vectors include:

1. Provided is an array of dynamic size, where elements can be added or removed as needed.
2. You can access elements by index or iterate through elements using iterators.
3. Supports synchronous access, can be safely used in a multi-threaded environment.
4. Provided backward compatibility for legacy code as it existed before the introduction of the Java collection framework.
5. This can be used as an implementation for stacks, queues, or other data structures.
6. It can store different types of objects because it stores references to objects.

In summary, the main use of Vector is to provide a dynamic array that automatically adjusts its size and supports synchronized access, used for storing and manipulating multiple objects.