Person.java Source code

Introduction

Here is the source code for Person.java

Source

import java.util.Arrays;

class Person implements Comparable<Person> {
    public Person(String firstName, String surname) {
        this.firstName = firstName;
        this.surname = surname;
    }

    public String toString() {
        return firstName + " " + surname;
    }

    public int compareTo(Person person) {
        int result = surname.compareTo(person.surname);
        return result == 0 ? firstName.compareTo(((Person) person).firstName) : result;
    }

    private String firstName;
    private String surname;
}

public class Main {
    public static void main(String[] a) {
        Person[] people = new Person[100];
        Arrays.fill(people, 0, 50, new Person("A", "B"));
        Arrays.fill(people, 50, 100, new Person("C", "D"));
        for (Person person : people) {
            System.out.println(person);
        }
    }
}