* 소스 코드 작성에 있어 디자인 패턴은 매우 중요하다. 디자인 패턴 학습에 도움이 되는 글들을 링크했다.

10 Object Oriented Design principles Java programmer should know (by Javin Paul)
http://javarevisited.blogspot.com/2012/03/10-object-oriented-design-principles.html

The builder pattern in practice (by Jose Luis)
http://jlordiales.wordpress.com/2012/12/13/the-builder-pattern-in-practice/

The ins and outs of immutability (by Jose Luis)
http://jlordiales.wordpress.com/2012/12/24/the-ins-and-outs-of-immutability/

Static factory methods vs traditional constructors (by Jose Luis)
http://jlordiales.wordpress.com/2012/12/26/static-factory-methods-vs-traditional-constructors/