Constant Constructor in Dart

We have to remember that whenever we create Constant Constructor in Dart our all variable are must final variable , if we use instance variable in Constant Constructor at that time the variable is not Constant .

Const Constructor has never any body for print statement , so we write print statement in main function using object.

Whenever we create const constructor's object we have to use " const " keyword , also we can use " new " keyword as well , it will not affect our output.

    //Constant Constructor Constructor 
    void main()
    {
      var const_Constructor = const display(20 , 30);
      print("The value of x : ${const_Constructor.x}");
      print("The value of y : ${const_Constructor.y}");

    }

    class display
    {
       final int x;
       final int y;

        const display(this.x , this.y);

    }