public string GetSystemDetails() { IComputerBrand computerBrand = _computerFactory.computerBrand(); IComputerType computerType = _computerFactory.computerType(); IComputerProcessor computerProcessor = _computerFactory.computerProcessor(); string returnValue = string.Format("{0} {1} {2}", computerType.getComputerType() , computerProcessor.getComputerProcessor() , computerBrand.getComputerBrand()); return(returnValue); }