How to obtain a new Pointer in Java?

Question

How can I call a method with this method signature in C from JNA?

int open_device(context *ctx, device **dev, int index);

The last two line

Answer 1

There are no pointers in Java, only references.

You cannot reassign a reference when you pass them to methods, because you pass them by value. Everything is passed by value in Java.

You can rewrite this method to instantiate a new instance of the device and return that instead of an int.