Map 接口是否扩展或实现了其他接口或 class?

Does Map interface extend or implement some other interface or class?

我们知道Map接口没有实现Collection接口。那么 Map 实现或扩展了什么?它是否直接扩展对象class?

相关问题: Why doesn't Java Map extend Collection?

Map 不扩展任何接口;它被定义为自己的接口。

在Java,interfaces don't extend classes, only other interfaces. Technically, all objects in Java extend Object, so any object implementing an interface is an Object.