7. Person and Customer Classes Design a class named Person with fields for holding a persons name, address, and telephone number. Write one or more constructors and the appropriate mutator and accessor methods for the classs fields. Next, design a class named Customer , which inherits from the Person class. The Customer class should have a field for a customer number and a boolean field indicating whether the customer wishes to be on a mailing list. Write one or more constructors and the appropriate mutator and accessor methods for the classs fields. Demonstrate an object of the Customer class in a simple program.

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