Design a SuperClass named Person with fields for holding a person's name, address, and phone number. Write one or more constructors and the appropriate mutator and accessor methods for the class's fields. Next, design a SubClass which inherit from the Person class. The Customer class should have a field for a customer number and boolean field indicating whether the customer wishes to be on a mailing list. Write one or more constructors and the appropriate mutator and accessor functions for the classes' fields. Third, design a SubClass which inherits from the Customer class. The PreferredCustomer class should have fields for the amount of the customer's purchases and the customers' discount level. Write one or more constructors and the appropriate mutator and accessor functions for the classes' fields. The amount of customer's discount is determined y the amount of the customer's cumulative purchases in the store: • When a customer spends $500, they are given a 5% discount on future purchases • When a customer spends $1,000, they are given a 6% discount on future purchases • When a customer spends $1,500, they are given a 7% discount on future purchases • When a customer spends $2,000 or more, they are given a 10% discount on future purchases Demonstrate an object of the Customer and PreferredCustomer in a simple program. Export your project folder which will contain 4 .java files and uploaded the zip folder here.

Here is the answer:-import java.util.*; class Person{private String firstName;private String lastName;private String addressLine1;private String addressLine2;private String addressLine3;private String city;private String state;private String country;private Integer zipCode;private String phone; public Person(){ } public Person(String fName, String lName){firstName = fName;lastName = lName;} public Person(String fName, String lName, String line1, String line2, String line3,String _city, String _state, String _country, Integer zip, String _phone){firstName = fName;lastName = lName;addressLine1 = line1;addressLine2 = line2;addressLine3 = line3;city =_city;state = _state;country =_country;zipCode = zip;phone = _phone;} public String getFirstName(){return firstName;} public void setFirstName(String fName){firstName = fName;} public String getLastName(){return lastName;} public void setLastName(String lName){lastName=lName;} public String getAddressLine1(){return addressLine1;} public void setAddressLine1(String line1){addressLine1 = line1;} public String getAddressLine2(){return addressLine2;} public void setAddressLine2(String line2){addressLine2 = line2;} public String getAddressLine3(){return addressLine3;} public void setAddressLine3(String line3){addressLine3 = line3;} public String getCity(){return city;} public void setCity(String _city){city = _city;} public String getState(){return state;} public void setState(String _state){state = _state;} public String getCountry(){return country;} public void set(String _country){country = _country;} public Integer getZipCode(){return zipCode;} public void setZipCode(Integer zip){zipCode = zip;} public String getPhone(){return phone;} public void setPhone(String _phone){phone = _phone;} public String toString(){ return "First Name : "+firstName+"\nLast Name : "+firstName+"\nAddress Line1 : "+addressLine1+"\nAddress Line2 : "+addressLine2+"\nAddress Line3 : "+addressLine3+"\nCity : "+city+"\nState : "+state+"\nCountry : "+country+"\nZip Code : "+zipCode+"\nPhone : "+phone;}} class Customer extends Person{String customerId;Boolean isMailingAllowed; public Customer(String fName, String lName,String id, Boolean isMail){super(fName,lName);customerId = id;isMailingAllowed = isMail; } public Customer(String fName, String lName, String line1, String line2, String line3,String _city, String _state, String _country, Integer zip, String _phone, String id, Boolean isMail){super(fName,lName, line1, line2, line3, _city, _state, _country, zip, _phone);customerId = id;isMailingAllowed = isMail;} public String toString(){return super.toString() +"\nCustomer Id : " +customerId +"\nis Mail Allowed : " + isMailingAllowed;}} public class InheritanceApp { public static void main(String []args){System.out.println("Hello World"); Person c1 = new Customer("Alex", "Cooper", "Flat 101" , "Thomas Apt", "Carter road", "Washington", "Washington", "USA", 78236, "101-11-1111", "XX001AAS", true);System.out.println( " Customer details are \n" + c1);}}