class Person {
  private String name;
  private int age;


  public Person (String name, int age) {
    this.name = name;
    this.age = age;
  }


  // For fun, let's do a second version that init's age to a sentinel value
  public Person (String name) {
    this.name = name;
    this.age = -1;
  }


  public String getName() {
    return name;
  }


  public int getAge() {
    return age;
  }

  public void setAge(int age) {
    this.age = age;
  }


  public boolean isOlder (Person p) {
    return (age > p.age);
  }


  public String toString() {
    return name + ", " + age; // The exact formatting was up to you
  }


  public boolean equals (Object o) {
    Person p = (Person) o;

    if (!this.name.equals(p.name))
      return false;

   if (this.age != p.age)
      return false;

    return true;
  }


  public static void main (String[] args) {
    Person fullInit = new Person ("Greg", 33);
    System.out.println (fullInit);

    Person nameOnlyInit = new Person ("Greg");
    System.out.println (nameOnlyInit);
    System.out.println (nameOnlyInit.getName() + ", " + nameOnlyInit.getAge());

    if (fullInit.equals(nameOnlyInit)) 
      System.out.println ("1st equals test: Equivalent -- Incorrect");
    else
      System.out.println ("1st equals test: Not Equivalent -- Correct");

    nameOnlyInit.setAge(fullInit.getAge());
    System.out.println(nameOnlyInit);

    if (fullInit.equals(nameOnlyInit)) 
      System.out.println ("2nd equals test: Equivalent -- Correct");
    else
      System.out.println ("2nd equals test: Not Equivalent -- Incorrect");

    Person matchesOnlyAge = new Person ("Jimbo", 33);
    System.out.println (matchesOnlyAge);

    if (fullInit.equals(matchesOnlyAge)) 
      System.out.println ("3rd equals test: Equivalent -- Incorrect");
    else
      System.out.println ("3rd equals test: Not Equivalent -- Correct");

    Person younger = new Person ("Angie", 32);

    if (fullInit.isOlder(younger))
      System.out.println ("1st isOlder test: Older -- Correct");
    else
      System.out.println ("1st isOlder test: Not Older -- Inorrect");

    if (younger.isOlder(fullInit))
      System.out.println ("2nd isOlder test: Older -- Incorrect");
    else
      System.out.println ("2nd isOlder test: Not Older -- Correct");

    if (matchesOnlyAge.isOlder(fullInit))
      System.out.println ("3rd isOlder test: Older -- Incorrect");
    else
      System.out.println ("3rd isOlder test: Not Older -- Correct");

  
    
  }
}