Answer:
Explanation:
The following code is written in Java. It creates the three classes as requested with the correct constructors, and getter/setter methods. Then the test class asks the user for all the information and creates the customer object, finally printing out that information from the object getter methods.
import java.util.Scanner;
class Person {
    String name, address, telephone;
    private void Person (String name, String address, String telephone) {
        this.name = name;
        this.address = address;
        this.telephone = telephone;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public String getTelephone() {
        return telephone;
    }
    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }
}
class Customer extends Person {
    String customerNumber;
    Boolean mailingList;
    public Customer(String s, Boolean mail) {
        super();
        this.customerNumber = customerNumber;
        this.mailingList = mailingList;
    }
    public String getCustomerNumber() {
        return customerNumber;
    }
    public void setCustomerNumber(String customerNumber) {
        this.customerNumber = customerNumber;
    }
    public Boolean getMailingList() {
        return mailingList;
    }
    public void setMailingList(Boolean mailingList) {
        this.mailingList = mailingList;
    }
}
class Test {
    public static void main(final String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter Customer Name: ");
        String name = in.nextLine();
        System.out.println("Enter Customer Address: ");
        String address = in.nextLine();
        System.out.println("Enter Customer Telephone: ");
        String telephone = in.nextLine();
        System.out.println("Would you like to receive mail? y/n ");
        Boolean mail;
        if(in.nextLine() == "y") {
            mail = true;
        } else {
            mail = false;
        }
        Customer customer = new Customer("1", mail);
        customer.setName(name);
        customer.setAddress(address);
        customer.setTelephone(telephone);
        System.out.println("Name: " + customer.getName());
        System.out.println("Address: " + customer.getAddress());
        System.out.println("Telephone: " + customer.getTelephone());
        System.out.println("Wants to receive mail: " + String.valueOf(customer.getMailingList()));
    }
}