What is the purpose of the `Callable` interface?

The Callable interface is used to represent tasks that can be executed concurrently by a thread and return a result or throw an exception. Unlike Runnable, which cannot return a result, Callable can return a value of a specified type and allows for exception handling.

• Usage: It’s commonly used with executor services (ExecutorService) for asynchronous task execution.
• Method: V call() throws Exception — the method that defines the task, which can return a result or throw an exception.

In summary, Callable is used for tasks that need to return a result or handle exceptions, typically in concurrent programming.