What is the difference between native and abstract

What is the difference between native and abstract?
can we declare a method as native inside an interface?if yes then why? if no then why not?

Interview Candidate
Jul 28th, 2006
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Java

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Showing Answers 1 - 3 of 3 Answers

Mallikarjuna

Sep 20th, 2006

Hi,
Native keyword is user to execute external code (c,C++) in java.

Sunil Pratap Singh

Nov 14th, 2006

Native keyword is prefixed with method name when we want that method to be implemented using a native language like c and c++. So in the class we only declare the method and the defination of the method is in the dll file.
Abstract key word is used to mark a method or a class as logically incomplete. The class which extends this class has to provide the defination of the method or has to declare the derived class as abstract.
We can not declare a native method inside a interface because by declaring a method in an interface we want all the implementers to give definations to the methods defined.But by declaring a method native we mean that the implementation will come from some native language.

abinaya .g.p
Profile Answers by abinaya .g.p

Nov 13th, 2010

No, because interface is by default is a abstract class and can contain only abstract methods and final or static variables, thus it cannot contain concrete methods and instant variables.