What are Stateful Widgets

In Flutter, widgets are the building blocks of the user interface. They are used to create everything you see on the screen. Widgets can be classified as stateless or stateful depending on whether they have an associated state.

Stateful widgets are widgets that can change their internal state during their lifetime. They are used when the user interface needs to be updated dynamically, such as when the user interacts with the app. Stateful widgets maintain their state information between builds and updates.

When you create a stateful widget in Flutter, you actually create two objects: a stateful widget object and a state object. The stateful widget object is immutable and can be used to create multiple instances of the widget. The state object is mutable and holds the state information for the widget. Whenever the state of the widget changes, the state object is updated and the widget is rebuilt.

To create a stateful widget in Flutter, you need to extend the StatefulWidget class and override the createState() method to return an instance of the associated State object. The State object holds the state information for the widget and is responsible for rebuilding the widget when its state changes.

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