@Override
    public String toString() {
        return "Joystick[name=" + name + ", id=" + joyId + ", buttons=" + getButtonCount()
                                + ", axes=" + getAxisCount() + "]";
    }
Gets the index number for the Y axis on the joystick.

<p>E.g. for most gamepads, the left control stick Y axis will be returned.

@return The axis index for the Y axis for this joystick.

@see Joystick#assignAxis(java.lang.String, java.lang.String, int)
jme3-core/src/main/java/com/jme3/input/AbstractJoystick.java