MATLAB: Class properties are being reinitialized each time I call a method

classconstructormethodobjectoop

Hi, class properties are being reinitialized each time I call a method. the result of the multiplication is always 15. Could you please tell me where is the error? I don't want to use any argument in the constructor method.
         classdef Multi                      
      properties                  
        x = 0;
        y = 0;
    end
      methods
        function obj = Multi()      
            obj.x = 5;
            obj.y = 3;   
        end       
        function obj = X (obj, x)
            obj.x = x;
        end
        function obj = Y (obj, y)
            obj.y = y;
        end  
        function obj = Mul (obj)
            disp (obj.x * obj.y);
        end       
      end    
end

Best Answer

You've shown the class definition, but not your test code. So, the problem appears to be entirely in your imagination:
>> obj=obj.X(20);
>> obj=obj.Y(10);
>> obj.Mul;
   200
However, I suspect that you neglected to assign the output of obj.X() and obj.Y() as above. If you don't want to have to do that, you might consider making this a handle class.
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