How can return structure array from a C++ dll to Java Applet using JNI?

Question

I have a C++ dll class. I want to return a structure array to Java Applet by using a JNI method. How can I access it from Java?

(structure array contains different type of structures)

Already returned a String array---

public native String[] fun();

JNIEXPORT jobjectArray JNICALL Java_fun(JNIEnv* pEnv, jobject Pobj)
{
}

but I didn't know how to work with Structure Array.

Could anyone please tell me.

Answer 1

You need to build the same structure as Java objects. Copy the values from the C++ structure into the Java structure in JNI. Return the Java structure and use it as normal Java objects.

Answer 2

There are few good code examples from Sun at Sun: STrings and Arrays

Try it out and tell us of your progress.

Answer 3

You could use JavaCPP , which generates all the nasty C++ JNI code for us. Then we only need to call Pointer.position() from Java to navigate native arrays of structures.