Closures for Java를 보니 드디어 Java에 Closure가 도입될지도 모르겠다. 자바에도 (Annonymous) Inner Class같은 것을 이용해서 Closure비슷한 기능을 수행할 수 있기는 하지만 제약이 많고 사용하기가 불편하기 때문에 또 개발자들이 익숙하지 않기 때문에 일부 listener등을 구현할 때 빼고는 거의 사용하지 않는다. 반면에 최근에 있기가 있는 Ruby, Groovy를 비롯해서 JavaScript에도 Closure는 적극적으로 사용된다. Ruby를 쓰면서 Closure의 편리함에 종종 감탄을 하는데 자바에 도입된다고 하니 반가운 마음이 든다. 하지만 자바의 보수적인 엔지니어들은 언어의 변화에 대해서 매우 불편해하기도 하는데 최종적인 결정이 어떻게 날지 모르겠다. JDK5에서 대 변화를 가져온 이래 JDK6에 스크립트 연동까지 본격적으로 시작했고 JDK7에서 Closure를 비롯한 그동안 사용자의 요구사항들이 많이 반영이 된다면 다시 언어로서 자바의 인기도 상승할 수 있을지 모르겠다. 너무 늦었다고 하는 사람도 있긴 하지만 말이다.

몇가지 읽어볼만한 관련글들

자바스크립트의 Closure를 잘 설명한 글

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