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전용뷰어 보기ch11. Interface and Polymorphism - ★ 코드의 재사용, ★ polymorphism으로 구현- inner class는 implements로 event-handler interfaces하는 classes에 유용 To learn about interfaces (인터페이스에 대해 배우기)Interface : A model for a class that specifies the fields and methods that must be present in a class that implements the interface실행되어야 하는 중요한 코드를 more general, more reusable 하게 한다Interface의 특징 ( 클래스와의 차이점 )Abstract (추..

◆ Interfaces vs. Classes◇ Interface type - All methods are abstract : they don't have to implementation- All methods in an interface type are automatically public- An interface type does not have instance fields ◈ Interface: collection of abstract methods◈ Abstract methods: methods without body/implementation ◆ Declaring an Interfacepublic interface InterfaceName{ method signatures}- don't have ..