MATLAB: ??? Too many input arguments.

Question

I follow example in Matalb Object Oriented> Hiearchy to create a parent class called DocAsset and child class called DocBond. I included the text of these classes below cause I cannot find how to attach file. When I try to create an instant of the class I got these error messages: >> t = DocBond ??? Too many input arguments.

Error in ==> DocBond>DocBond.DocBond at 12 function obj = DocBond(description,faceValue,yield,currentBondYield)

>> t = DocBond('bond 1',1,2,3) ??? Too many input arguments.

Error in ==> DocBond>DocBond.DocBond at 12 function obj = DocBond(description,faceValue,yield,currentBondYield)

I believe constructor should be able to handle with variant input argument otherwise I have correct number of input.

%========================================

classdef DocAsset

    properties
        description = '';
        currentValue = 0;
    end
    properties (SetAccess = private)
        dateOpen;
        type = AssetType.Savings;
    end
    methods
        function obj = DocAsset(description,currentValue,type)
            if nargin > 0
                a.description = description;
                a.dateOpen = date;
                a.type = type;
                a.currentValue = currentValue;
            end
        end
        function obj = setType(obj,type)
            if (type ~= AssetType.Bond || type ~= AssetType.Stock || type ~= AssetType.Savings)
                error('Type must be an enum AssetType');
            end
            obj.Type = type;
        end
        function disp(obj)
           fprintf('Description: %s\nDate: %s\nType: %s\nCurrentValue:%9.2f\n',...
           obj.description,obj.dateOpen,obj.type,obj.currentValue);
        end
    end
end

%========================================

classdef DocBond < DocAsset

    properties
        faceValue = 0;
        yield = 0;
        currentBondYield = 0;
    end
    methods
        function obj = DocBond(description,faceValue,yield,currentBondYield)
            if nargin ~= 4
                description = '';
                faceValue = 0;
                yield = 0;
                currentBondYield = 0;
            end
            marketValue = DocBond.CalcValue(faceValue,yield,currentBondYield);
            obj = obj@DocAsset(description,marketValue,AssetType.Bond);
            obj.faceValue = faceValue;
            obj.yield = yield;
            obj.currentBondYield = currentBondYield;
        end
        function disp(obj)
            disp@DocAsset(obj);
            fprintf('Face value of bonds: $%g\nYield: %3.2f%%\n',...
            obj.faceValue,obj.yield);
        end
    end
    methods (Static)
        function marketValue = CalcValue(faceValue,yield,currentYield)
            if currentYield <= 0 || yield <= 0
                marketValue = faceValue;
            else
                marketValue = faceValue*yield/currentYield;
            end
        end
    end
end

%============================

classdef(Enumeration) AssetType

    enumeration
        bond(0)
        stock(1)
        savings(2)
    end

end

Answer 1

I found the answer, because I replaced string by eNum and I cannot use %s to print enum. The issue is error message here is not helpful at all.