You have given a great thought to those who are still thinking How multiple inheritance is satisfield in java.Its amazing and you made a great help to java developers.

I would just like to add a few points here:

1) Consider there is no super class ‘A’ [which forms of the top of 'Diamond'], and we have just classes B and C. Say, we have 2 identical methods in both ‘B’ and ‘C’, even in that case, a class ‘D’ which inherits both ‘B’ and ‘C’ will have problem choosing the appropriate method implementation to run [assuming that D doesn't override the method at all].

The same scenario could be considered in Java, where 2 different interfaces can have one method each, with the same signature. A class inheriting both the interfaces, however, needn’t worry and provide implementation to the method only once.

But,think of a slight difference to the scenario above, where one interface ‘A’ has a method foo() which returns ‘int’ and another interface B which also has a method definition foo() which returns nothing[void]. Now a class ‘C’ cannot inherit both the interfaces together if it does, then it has to provide implemenation for both versions of ‘foo()’. If the class goes on to do that, the Java compiler doesn’t allow because, Java doesn’t support method overloading based on return type. Related to the same, I found this article interesting: http://today.java.net/pub/a/today/2008/07/31/return-type-based-method-overloading.html

I read over your answer on your site, and its great! You know you can add your answer to the existing one, since not many read the discussion page, I would hate for people to skim over your amazing answer. Also, I would like to invite you to help contribute more to this section and Wikianswers as a whole since your answers (on your site) are amazing.

Sincerely,
Rosencrantz
Java Section Supervisor