Person.java

import java.util.Objects;

public class Person implements Cloneable, Comparable<Person> {

    private String name;
    private Address address;

    public Person(String name, Address address) {
        super();
        this.name = name;
        this.address = address;
    }

    @Override
    public Person clone() {
        try {
            Person clonedPerson = (Person) super.clone();
            // Perform deep copy for reference-type fields
            clonedPerson.name = new String(this.name);
            clonedPerson.address = this.address.clone();
            return clonedPerson;
        } catch (CloneNotSupportedException e) {
            // Should never happen since Person implements Cloneable
            throw new InternalError(e);
        }
    }

    @Override
    public boolean equals(Object other) {
        if (this == other) return true;
        if (other == null || getClass() != other.getClass()) return false;
        Person person = (Person) other;
        return Objects.equals(name, person.name) && Objects.equals(address, person.address);
    }

    @Override
    public int compareTo(Person p) {
        return this.name.compareTo(p.name);
    }

    public String toString() {
        return name + " resides at " + address;
    }
}