class Truck {

	private String vin = null;

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

	public String getVin() {
		return vin;
	}

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

	@Override
	public String toString() {	
		return String.format("(%s)", this.vin);
	}

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

		Truck that = (Truck) obj;

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

}