How can you ensure the immutability of a class object in your code?

To ensure immutability of a class object in Flutter (Dart), you can use the following approaches:

• Declare all class fields as final so they can only be initialized once.
• Make the class const-constructible if all fields are also final.
• Do not provide setters or methods that modify the object's state.

Example:

class User {
  final String name;
  final int age;

  const User(this.name, this.age);
}

void main() {
  const user = User('Ivan', 30);
  // user.name = 'Peter'; // Error, final field
}

Thus, once an instance is created, its state cannot be changed, ensuring object immutability.