For another, a single class can implement multiple interfaces.
另一方面，单个类可以实现多个接口。
The class files from the second package implement the interfaces from the first.
第二个包中的类文件实现了第一个包中的接口。
Suppose you have a derived class D whose base class B has implemented some interfaces.
假设有个类型D，它的基类B实现了某些接口。
No special interfaces or class path restrictions.
无特殊接口或者类路径限制。
Interfaces are useful when you cannot use class inheritance.
在无法使用类别继承的情况下，介面是相当有用的。
A class may implement several interfaces.
interface一个类可以实现多个接口。
A class may implement several interfaces.
interface一个类可以实现多个接口。
应用推荐