change variable in a class

I have two classes, whereas the second class is to be called by the first one.

classdef sender < handle
    
    properties
        Bitvektor;
    end
    properties (Access = private)
        kobj;
    end
    methods
        function  obj = sender(variable)
            obj.Bitvektor = variable;
            obj.kobj = kanal;       %initialize class kanal
        end
        function u = sendeBitvektor(obj) 
            obj.kobj.Bitvektor = obj.Bitvektor;
            u = obj.kobj.sendtoreceiver; % call function in class kanal
            
        end
    end
end

%%%%%
classdef kanal < handle
    properties
        Bitvektor
        Delta
    end
    
    methods    
        function on = kanal(obj)
            on.Bitvektor ;
            on.Delta
        end
    end
    methods
        function u = sendtoreceiver(on)
            on.Delta
        end
    end
    
end

Now if i try to change delta in kanal the value seems to be changed.

delta = 0.05;
kanal.Delta = delta

However, if i call the function sendtoreceiver, it appears, that the value wasn't assigned to delta.

Sender is not supposed to know delta.

How do i permanently change the value of delta, such that if i call the function sendtoreceiver delta is already assigned ?

Thanks for every help

Answer 1

[Vimal Rathod]

Hi,

As kanal object is a private variable in sender class, any user will not be able to access that object and set any variable to the delta field and to assign value of delta you have to create a set method or you could assign the variable with a value in the constructor only.

Refer to the following link to know more details about constructor

https://in.mathworks.com/help/matlab/matlab_oop/class-constructor-methods.html

Refer to the following link to know more about set methods

https://in.mathworks.com/help/matlab/matlab_oop/property-set-methods.html