The purpose of this part of the assignment is to practice working with abstract classes and interfaces by building multiple related data types. create and implement the following classes and interfaces: • an interface noisemaker that contains the void method makenoise() • an abstract class vehicle that has an abstract void method a data field int price, and which implements the comparable interface. create a constructor that initializes the price field via a parameter to the constructor (e. g., public vehicle(int use the price field to determine whether one vehicle is “greater than”, “less than” or “equal to” another. override the public boolean equals(object other) inherited from the object class. two vehic