Description: The ‘Notification Listener’ in Java refers to an interface that allows objects to receive notifications of events or changes from a data source. This functionality is fundamental in event-driven programming, where objects can react to specific actions, such as changes in the state of an object or the arrival of new data. The listener interface is based on the Observer design pattern, where one object (the subject) maintains a list of dependents (the observers) and automatically notifies them of any changes in its state. This allows for efficient and decoupled communication between components, facilitating the creation of more dynamic and responsive applications. The implementation of notification listening in Java is commonly done through interfaces that define specific methods that must be implemented by the observers. This feature is especially relevant in graphical applications, event management systems, and the programming of distributed applications, where synchronization and real-time data updates are crucial. In summary, ‘Notification Listening’ is a powerful tool in Java that enables developers to build interactive and efficient applications, enhancing user experience and software functionality.