Final answer:
To display or remove a notification, a notification manager object such as the NotificationManager in Android development is used. It interfaces with the system's notification service to manage notifications for the user. Programmers must know how to work with these objects to manage notifications within an application.
Step-by-step explanation:
To display or remove a notification, you can use a notification manager object. In many operating systems and applications, a notification manager is responsible for overseeing the notifications that appear to the user. This includes creating, displaying, updating, and dismissing notifications that are meant to inform the user about an event or provide them with some kind of alert.
For example, in Android development, NotificationManager is the class that is used for this purpose. It interacts with the Android system’s notification service to present the user with notifications. Similarly, in other programming environments such as web development, there may be equivalent mechanisms for dealing with notifications, like using JavaScript libraries or browser APIs.
To utilize these objects typically requires some programming knowledge. You would need to understand how to instantiate these manager objects and call the appropriate methods to achieve the desired notification functionality within the application you are developing.