In what situations can objects be used in programming?

Objects in programming are used to model real entities and combine data with behavior. In Android (and object-oriented programming in general), objects are used in the following situations:

• To encapsulate state and logic, for example, Activity or Fragment objects represent screens of an application.
• To organize code and enable reuse through classes and inheritance.
• To manage the lifecycle of components and their interactions.
• To represent data, such as model objects that store information and provide methods to work with it.

Example: an object of class Button in Android contains state (text, color) and methods (click handlers), which simplifies working with UI components.

Using objects helps structure code, makes it more understandable and maintainable.