import com.sun.jna.*;

import com.sun.jna.ptr.*;

public class JNAPointer {

/**

* @param args

*/

public interface CLib extends Library{

public interface OpenFunc extends Callback{

void invoke ( IntByReference p1);

//void invoke(String filename , int i);

}

public class FunCallBack implements OpenFunc{

@Override

/*public void invoke(String filename , int i){

System.out.println("callback called.");

System.out.println(filename);

}*/

public void invoke( IntByReference p1){

System.out.println(p1);

System.out.println("callback called.");

}

}

void init(OpenFunc openfunc);

void swap( IntByReference p1 , IntByReference p2);

void test();

}

public static void main(String[] args) {

CLib lib =(CLib)Native.loadLibrary("JNALib", CLib.class);

CLib lib2 = (CLib)Native.loadLibrary("swap",CLib.class);

CLib.FunCallBack func = new CLib.FunCallBack();

IntByReference p1 = new IntByReference (3);

IntByReference p2 = new IntByReference (5);

lib.init( func);

lib2.swap(p1, p2);//Java called C++ pointer

lib.test();//C++ callback java

}

}