March 15th Thursday (三月 十五日 木曜日)

  Today I got a class on OOA -- Object-oriented analyse.  Teacher told us what is the "object", firstly.  And then
he how to design a software in object-oriented thought.  Finally, he hold a example of banking.  Although the teaching is good it is so difficulty to design a good and flexible software architecture.

  More than, as for advantages and disadvantages of OOP the teacher did not explain explicitly.  Nowadays design pattern prevails among programmers who are engaged in object-oriented programming.  Advantage is sometime disadvantage.