About Pankaj Kumar
Sometime back I wrote few posts about inheritance, interface and composition in java. In this post, we will look into multiple inheritance and then learn about benefits of composition over inheritance.
Multiple Inheritance in Java
Multiple inheritance is the capability of creating a single class with multiple superclasses. Unlike some other popular object oriented programming languages like C++, java doesn’t provide support for multiple inheritance in classes. Java doesn’t support multiple inheritance in classes because it can lead to diamond problem and rather than providing some complex way to solve it, there are better ways through which we can achieve the same result as multiple inheritance.
Diamond Problem
To understand diamond problem easily, let’s assume that multiple inheritance was supported in java. In that case, we could have a class hierarchy like below image.
Source : http://www.javacodegeeks.com/2013/08/multiple-inheritance-in-java-and-composition-vs-inheritance.html
