[모던 자바 인 액션] 2장. 동작 파라미터화 코드 전달하기 #35
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- ApplePredicate 객체에 의해 filterApples 메서드의 동작이 결정된다. - 즉, filterApples 메서드의 동작을 파라미터화한 것이다.
- 현재 filterApples 메서드로 새로운 동작을 전달하려면 ApplePredicate 인터페이스를 구혀나는 여러 클래스를 정의한 다음에 인스턴스화 해야 한다. 이는 상당히 번거로운 작업이다. - 만약, 익명 클래스를 사용하면 클래스 선언과 인스턴스화를 동시할 수 있어, 즉석에서 필욯나 구현을 만들어서 사용할 수 있는 장점이 있다.
- 사과 뿐만 아니라 바나나, 정수 등의 리스트에 필터 메서드를 사용 - 이렇게 유연함과 간결한 코드가 완성되었다!
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