In java this can never occur as there is no multiple inheritance. In C++ there is a possibility to get into this trap though it provides alternates to solve this. D should inherit that overridden method, which overridden method will be used? Will it be from B or C? Here we have an ambiguity. Now D inherits from both B and C doing multiple inheritance. Assume that B and C are overriding an inherited method and they provide their own implementation. We have two classes B and C inheriting from A. In order to enforce simplicity should be the main reason for omitting multiple inheritance. For instance, we can consider diamond problem of multiple inheritance. What is the first characteristic in the language definition? It is simple. CREATING A OWN EXCEPTION IN SUBCLASSES IN JAVA IN HINDI SOFTWAREThis should be the definition for a modern software language. Look at the beauty of this definition for java. JAVA: A simple, object oriented, distributed, interpreted, robust, secure, architecture neutral, portable, high performance, multithreaded, dynamic language. I want to share the definition for java given by James Gosling. But why? This is a design decision taken by the creators of java. Now we are sure that there is no support for multiple inheritance in java. Why Java does not support multiple inheritance? C++, Common Lisp, are some popular languages that support multiple inheritance. Multiple inheritance is where we inherit the properties and behavior of multiple classes to a single class. I would simply say, there is no support for multiple inheritance in java. CREATING A OWN EXCEPTION IN SUBCLASSES IN JAVA IN HINDI FREEIt is not getting the implementation free from the parent classes. The implementing class is the one that is going to add the properties and behavior. What we do is implement multiple interface, here we are not extending (inheriting) anything. This is trying to get closer to multiple inheritance. This is by agreement we are adhering to two blueprints to create a class. Interface gives flexibility than concrete classes and we have option to implement multiple interface using single class. This story of supporting multiple inheritance using interface is what we developers cooked up. If you do not believe my words, read the above paragraph again and those are words of the father of Java. There is no support for multiple inheritance in java. This itself is a point of discussion, whether java supports multiple inheritance or not. Java does not support multiple inheritanceįirst lets nail this point. This paragraph gives us an overview and he touches this topic of not supporting multiple-inheritance. James Gosling is qualified to make a comment on this. This primarily consists of operator overloading (although it does have method overloading), multiple inheritance, and extensive automatic coercions. JAVA omits many rarely used, poorly understood, confusing features of C++ that in our experience bring more grief than benefit. In an white paper titled “Java: an Overview” by James Gosling in February 1995 gives an idea on why multiple inheritance is not supported in Java.
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