about native method

[devi nachimuthu]

Why might you define a method as native...?
1)To get to access hardware that java does not know about
2) To define a new data type such as an unsigned integer
3) To write optimised code for performance in a language such as c/c++
4) To overcome the limitation of the private scope of a method
My answer is 3. But the given answers are 1 and 3. Is 1 is also correct about native method...?
Thanks

[Paul A]

Yes, 1 is also a correct option.
For eg, you might want to access a device driver that's written in c/c++. You can do it using JNI.
HTH,
Paul.
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