Create a class named NewspaperSubscriber with fields for a subscriber’s street address and the subscription rate. Include get and set methods for the subscriber’s street address, and include get and set methods for the subscription rate. The set method for the rate is abstract. Include an equals() method that indicates two Subscribers are equal if they have the same street address. Create child classes named SevenDaySubscriber, WeekdaySubscriber, and WeekendSubscriber. Each child class constructor sets the rate as follows: SevenDaySubscribers pay $4.50 per week, WeekdaySubscribers pay $3.50 per week, and WeekendSubscribers pay $2.00 per week. Each child class should include a toString() method that returns the street address, rate, and service type. Write an application named Subscribers that prompts the user for the subscriber’s street address and requested service, and then creates the appropriate object based on the service type. Do not let the user enter more than one subscription type for any given street address. Save the files as NewspaperSubscriber.java, WeekdaySubscriber.java, WeekendSubscriber. java, SevenDaySubscriber.java, and Subscribers.java.