What is the purpose of shareable interfaces? Give one example about shareable interface.

The purpose of shareable interfaces in programming is to allow different classes to use the same method signatures. This means that different classes can implement the same interface and provide their own implementation of the methods defined in the interface. This promotes code reusability and flexibility, as you can use objects of the classes interchangeably where the interface type is expected.

For example, in Java, the List interface is a shareable interface. Different classes like ArrayList, LinkedList, and Vector implement the List interface. They all have their own implementation of the methods defined in the List interface, such as add(), remove(), and get(). This means you can use an ArrayList, LinkedList, or Vector interchangeably where a List is expected, providing flexibility in choosing the right implementation for your specific needs.