Java Vector Class: Usage Guide

One common use of the Vector class in Java is as a dynamic array that automatically expands and contracts, allowing for the storage of objects of different data types.

1. Declare and instantiate a Vector object:
2. Create a Vector object to store integers.
3. Add elements:
4. vector.add(10); // Add element to the end of the Vector
   vector.add(20);
   vector.add(30);
   vector.add(1, 15); // Insert element at a specified position
5. Accessing elements:
6. Retrieve the element at a specified position in the vector.
7. Modify elements:
8. update the element at the specified position to 25 in the vector
9. Remove elements:
10. vector.remove(0); // Remove element at specified position
    vector.removeElement(30); // Remove specified element
11. Iterate through the Vector.
12. Alternatively, you can use an enhanced for loop to iterate through the vector and print each element.
13. Check if the Vector is empty.
14. A boolean variable named isEmpty is assigned the value of vector.isEmpty().
15. Get the size of the Vector:
16. size variable is assigned the size of the vector.
17. Clear the Vector:
18. Clear the vector.

It is important to note that the Vector class is thread-safe, which means it is suitable for multi-threaded environments. However, in a single-threaded environment, it is recommended to use ArrayList instead of Vector because ArrayList has better performance.