class Car {

	private String vin = null;

	public Car(String vin) {
		this.vin = vin;
	}

	public String getVIN() {
		return this.vin;
	}

	public void setVIN(String vin) {
		this.vin = vin;
	}

	@Override
	public String toString() {
		return vin;
	}

	@Override
	public boolean equals(Object obj) {
		if (!(obj instanceof Car)) {
			return false;
		}
		Car that = (Car) obj;

		return this.vin.equals(that.vin);
	}
}