About Question enthuware.ocpjp.v7.2.1105 :

[gk_javauser]

In the explanation, shouldn't it have the class type?

Current:
private static final theInstance = new SpeedSensor(); //Create one object of the class

My understanding:
private static final SpeedSensor theInstance = new SpeedSensor(); //Create one object of the class

[admin]

Yes. The variable type is missing. Fixed.
thank you for your feedback!