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why java does not support multiple inheritance?

rsj — Tue, 29 Sep 2009 10:29:50 GMT

why java does not support multiple inheritance

Java absolutly support multiple inheritence in terms of

Interface.We can extend one class only to avoid ambiguity

problem.In interface we have to define the functions.So we

don't get any ambiguity.In c++ it is big problem with

multiple inheritence but in JAVA this thing is improved by

introducing Interfaces

why java is not 100% object oriented language??

rsj — Tue, 29 Sep 2009 10:28:38 GMT

Java is not a pure Object oriented language but so called a Hybrid language.

For any language to be pure object oriented it must follow these 6 points strictly...

1) It must have full support for Encapsualtion and Abstraction

2) It must support Inheritance

3) It must support Polymorphism

4) All predefined types must be Objects

5) All user defined types must be Objects

6) Lastly all operations performed on objects must be only through methods exposed at the objects.

Now java supports 1 2 3 & 5 but fails to support 4 & 6.

In java we have some predefined types as non-objects (primitive types). Although we have wrapper classes for the same but a Pure OOL can't have anything other than Objects strictly.

And regarding point 6 In java we can have communicate with objects without calling their methods for e.g. using arithmatic operators.

String s1 Ashish + A ;

These 2 points stops java from being a pure OOL.

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rsj — Mon, 28 Sep 2009 09:46:25 GMT

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Application

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game

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rsj — Sat, 26 Sep 2009 11:35:33 GMT

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