Mockito allows you to create mock versions of external APIs.
When testing a component that relies on an external API, such as a PaymentGateway in an e-commerce app, using Mockito to create a mock lets you simulate various API responses without actual network calls. This isolation ensures tests are not affected by network issues or API changes. For instance, mocking a PaymentGateway allows you to test how your system handles successful and failed payments reliably.