Add the field int horsePower to the class Engine.
Then create a method void printHorsePower inside the inner class that prints the name of your Vehicle and the horsePower of it's Engine.
For a vehicle called Dixi with 20 horsepower the output of printHorsePower should be:
Vehicle Dixi has 20 horsepower.
And don't forget to add constructors in both classes!
Please, don't use access modifier private for methods.