Description: The ‘Listener Adapter’ is a class in Kotlin (and other programming languages) that provides default implementations for listener interfaces, facilitating the implementation of design patterns like Observer. This type of adapter allows developers to create classes that can handle events without needing to implement all the methods of the interface. By offering empty implementations of the methods, the adapter simplifies the process of creating listeners, allowing programmers to focus on the methods they actually need to override. This not only reduces the amount of code that needs to be written but also improves the readability and maintainability of the code. The use of listener adapters is particularly useful in applications that require a response to events, such as in the development of graphical user interfaces (GUIs) or in event programming in various applications. The flexibility and ease of use that these adapters offer are key features that make them popular among developers.