title: How to know the jclass to which a jobject belongs (JNI)
body: <p>I need to call the same native C method from my JNI code. This method receives a generic <code>jobject</code> object, but its behavior is different depending on the type of the object itself.</p>
  
  <p>I have two <code>jclass</code> objects, named activityCls and fragmentCls (which respectively map an Activity class and a Fragment class in Java). What can I do in order to know if the given <code>jobject</code> object is of kind activityCls or fragmentCls?</p>