Implement callback function in JNI using Interface

I need to implement callback function in Java using “interface”. I have wrote the application part as MyJavaFunction(int size, m_GetSizeInterface);

m_GetSizeInterface is an Interface which contains the callback function GetSize. This GetSize method is override in the application. In JNI I need to call a CPP function having prototype int MyCPPFunction(int size, int (*callback)(int* ID));

How can I pass this GetSize as parameter to MyCPPFunction in JNI? Please help

public int GetSize (m_SizeClass arg0)
{
    g_size = arg0.size;
        return 0;
}