추상 팩토리

추상 팩토리
http://blog.naver.com/gamediz?Redirect=Log&logNo=20040325465
http://blog.naver.com/newsdu?Redirect=Log&logNo=80115144381

옵져버요약

http://blog.naver.com/skcjs84?Redirect=Log&logNo=90089785083

싱글턴요약

http://blog.naver.com/PostView.nhn?blogId=skcjs84&logNo=90089854283&categoryNo=0&parentCategoryNo=37&viewDate=&currentPage=1&postListTopCurrentPage=1&from=search