method and class tables and an algorithm are provided for use in determining if a called method in a message should be retrieved and executed or a method search should initiated . the method table includes method name , method identifier , method overwrite data , class overwrite data and method memory storage location associated with the method related to the overwrite data . the algorithm sets a plurality of variables to an entry in the class table and at least one method and class data referenced in a message , searches the method table and sets search variables to the class and method overwrite data and determines if a predetermined relationship exists between the method and class identifier associated with the class and method data in the message as well as data in one of method entries . the method memory storage location is read out once a method entry with the predetermined relationship is found .