What is the use of private constructor in flutter?

A constructor can be made private by using (_) underscore operator which means private in dart. The same theory applied while extending class also, It’s also impossible to call the private constructor if it declares in a separate file.13 Mar 2019

Yes , a constructor can be private.

Yes , a constructor can be private.

If a constructor is declared as private, then its objects are only accessible from within the declared class . You cannot access its objects from outside the constructor class.

If a constructor is declared as private, then its objects are only accessible from within the declared class . You cannot access its objects from outside the constructor class.

A constructor can be made private by using (_) underscore operator which means private in dart. The same theory applied while extending class also, It’s also impossible to call the private constructor if it declares in a separate file.13 Mar 2019

Private constructors are used to prevent creating instances of a class when there are no instance fields or methods , such as the Math class, or when a method is called to obtain an instance of a class.