Which concept (Interface or Inheritance) is more powerful in java?

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suresh

hi
I think both are equally imp in java!Still i think may be inheritance simply coz it allows code reusability.interfaces used for multiple inheriance only,so i think
inheritance is powerful.
bye

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:)
NEVER SAY DIE.

Interface no doubt!

'both are imporatant no doubt abt it...i am going to explain it clearly tomorrow..becaoz...there is need to refer abt it clearly'

Both the concepts are having its own important,But compare to Inheritance Interface having more powerful....

Inheritence is a time tested, 'globally' accepted feature. So inheritence is a very, very powerfule feature.

Interfaces are powerful only because inheritence is powerful.

Interfaces combine two very important notions in programming.

Inheritence + abstraction = interface

The abstractness part allows us to 'program to interfaces' and is used in atleast a couple of design patterns (I know only two p[atterns ). This provides a common interface making the code extensible and maintanable at the same time.

And you know what inheritence brings to the package.

I still can't decide which is more powerful

Inheritance -->enforces reusability in the design phase (closed to traffic at runtime JRE ).

Interface --> enforces and defines an open standard for any future framework to be build upon. (open to traffic at runtime JRE )

Both are equally important in java..

As the famous GoF book says:

Prefer interfaces over inheritance.

Use interfaces as a design-time resource when you are planning your system. Inheritance should be used almos always to reuse code. If your system is designed based on interfaces, it will be easier to maintain and to evolve. Of course this is not a fixed rule, but it works most of the time.

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Neelima

encapsulation,polymophism and interfaces.
another main concepts:
reusability.
portability.

can we read a xml file through the core java application?if possible provide one example also?

Interface. Because Multiple inheritance are not allowed in jave

Inheritance is the major force behind any object oriented language.

First inheritance concept comes in picture then any other thing(like interface) which need to be inherited.

So powerful in Inheritence offcourse!!!