With inheritance of interface you inherit only the method declarations, not the implementation. So when you inherit interface, your new object exposes all of those methods declared in the subclass.

Java’s interface language feature confuses many Java newbies. Many mistakenly assume that interfaces only sidestep Java’s failure to support multiple implementation inheritance.

Leveraging Interfaces Instead of Inheritance. If you need to have objects look alike but don't have any code to share, you don't need inheritance -- you need an interface. Here's an example of how ...

In literature, one encounters the terms subclassing and implementation inheritance, among others, to refer to the use of inheritance as a means for code reuse. The terms subtyping, interface ...

It seems that MI has fallen severely out of favor. Neither of the two "big" programming languages to come out in the last few years, Java or C#, make use of multiple implementation inheritance ...