/*
 * Person.java 1.0
 *
 * Example for OOP
 *
 */
 

class Person implements Cloneable{
	public Car car;
	private String name;

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

	public String toString(){
		return name;
	}

	/* pre: car.owner = this
	 */
	public void setCar(Car car){
		this.car = car;
	}

	public Car getCar(){
		return car;
	}
	/*	Exercise 4
	 *	First remember to implement the interface Cloneable

		A simple solution is to make the cloned person NOT own a car.
		This is what is done below.
		An other solution is to say one cannot clone persons who owns a car.
		Also, we provide the clone with a clone of the car.

	 */
	public Object clone() {
		try {
			Person p = (Person) super.clone();
			p.car = null;
			return p;
		}
		catch(CloneNotSupportedException e) {
			throw new Error(e);
		}
	}

	// Clone test
	public static void main(String[] args)
	{
		Person p1 = new Person("Lars");
		Car c = new Car(p1,"Skoda");
		Person p2 = (Person) p1.clone();
		System.out.println( p1.getCar() );
		System.out.println( p2.getCar() );
		System.out.println( "and owners" );
		System.out.println( p1.getCar().getOwner() ); // Lars
		System.out.println( p2.getCar() ); // null
	}
}