// purpose: represent a person

public class Person {

	// attributes
	String id;
	int age;
	String sex;
	String favorite;

	// constructors -- person configurers

	// Person(): default person
	public Person() {
		this.setId( "Superman" );
		this.setAge( 27 );
		this.setFavorite( "Truth, justice, and the American way" );
	}

	// Person: specified person
	public Person( String n, int a, String f ) {
		this.setId( n );
		this.setAge( a );
		this.setFavorite( f );
	}

	// inspectors -- accessors to a person's information

	// getId(): give back the person's id
	public String getId() {
		return this.id;
	}

	// getAge(): give back the person's age
	public int getAge() {
		return this.age;
	}

	// getFavorite(): give back the person's favorite
	public String getFavorite() {
		return this.favorite;
	}

	// mutators -- modifiers of a person's information

	// setId(): update the person's id
	public void setId( String n ) {
		if ( n.length() != 0 ) {
			this.id = n;
		}
	}

	// setAge(): update the person's age
	public void setAge( int a) {
		if ( ( a >= 18 ) && ( a <= 100 ) ) {
			this.age = a;
		}
	}

	// setFavorite(): update the person's favorite
	public void setFavorite( String f ) {
		if ( f.length() != 0 ) {
			this.favorite = f;
		}
	}

	// other behaviors
	public String toString() {
		String n = this.getId();
		int    a = this.getAge();
		String f = this.getFavorite();

		String representation = "Person( " + n + ", " + a + ", " + f + " )";

		return representation;
	}

	public boolean equals( Object other ) {
		if ( other instanceof Person ) {
			Person p = (Person) other;
		
			String n1 = this.getId();
			String n2 = p.getId();

			int    a1 = this.getAge();
			int    a2 = p.getAge();
		
			String f1 = this.getFavorite();
			String f2 = p.getFavorite();

			return ( n1.equals( n2 ) && ( a1 == a2 ) && f1.equals( f2 ) );
			
		}
		else {
			return false;
		}
	}
}