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请问什么是Java中的接口(Interface)?如何定义和实现接口?
在Java中,接口是一种契约性的概念,用于定义类应该具有的方法和常量。它可以看作是一个抽象类的特殊形式,但与抽象类不同的是,接口中的所有方法都是抽象的,没有具体的实现。一个类可以实现一个或多个接口,并通过实现接口中声明的方法来实现接口的 ...
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