Filling up a Vector & returning it...

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gautam.chavan@gmail.com - 14 Feb 2006 12:19 GMT

hello all,

I have a C++ file, which calls a c++ library which returns
a Vector<Struct>
My C++ File is invoked via a Jni call...
Instead of returning an Object array back to my Java Class,
i want to return a vector...
Can I pass a refrence to a Vector to my C++ file, which it
can fill up...
is this possible ???

regards and thanks,
gautam.

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Gordon Beaton - 14 Feb 2006 12:30 GMT

> I have a C++ file, which calls a c++ library which returns a
> Vector<Struct>. My C++ File is invoked via a Jni call... Instead of
> returning an Object array back to my Java Class, i want to return a
> vector... Can I pass a refrence to a Vector to my C++ file, which it
> can fill up... is this possible ???

Yes, it's possible. An alternative is to let the C++ function itself
create the Java Vector, fill it and return it.

Within your native method, JNI lets you invoke any constructors or
methods in any Java class, just like you can from Java. Just the
syntax is more complicated.

/gordon

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