Why is the build() method on State and not Stateful Widget?

The build() method is defined on the State class rather than the StatefulWidget class in Flutter for several reasons:

Separation of Concerns

By separating the build() method from the StatefulWidget, Flutter promotes a clear separation of concerns between the widget's state management and its visual representation. This separation makes the code more modular, easier to understand, and maintain.

Reusability

Defining the build() method on the State class allows for the reuse of the same visual representation across multiple instances of the same StatefulWidget. This is particularly useful when you have multiple instances of a widget that share the same state and appearance.

State Lifecycle Management

The State class provides lifecycle methods like initState(), didUpdateWidget(), and dispose() that are responsible for managing the state of the widget. These methods are closely tied to the `build...