public boolean isContactResponse() {
        int flags = rBody.getCollisionFlags();
        boolean result = (flags & CollisionFlags.NO_CONTACT_RESPONSE) == 0x0;
        return result;
    }
Test whether this body responds to contacts.

@return true if responsive, otherwise false
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsRigidBody.java