Description: The Listener Pattern is a design pattern that allows one object, known as the ‘listener’, to receive notifications of events occurring in another object, referred to as the ’emitter’. This pattern is fundamental in event-driven programming, where objects can communicate with each other without being directly coupled. The main characteristic of the Listener Pattern is its ability to promote separation of concerns, facilitating code scalability and maintenance. By implementing this pattern, a system can be created where components interact efficiently, allowing one object to listen and respond to specific events, such as state changes or user actions. This is particularly useful in applications where multiple components need to react to common events, such as in graphical user interfaces or notification systems. Furthermore, the Listener Pattern encourages code reuse, as listeners can be implemented and used in different contexts without modifying the emitter. In summary, this pattern not only improves code organization but also optimizes communication between objects, resulting in more flexible and robust systems.
