class HamTester {
	public static void main(String[] args) {
	Hamburger h1 = new Hamburger();
	h1.addTopping("Cheese");
	h1.addTopping("Bacon");
	
	Hamburger h2 = new Hamburger();
	h2.addTopping("Bacon");
	h2.addTopping("Cheese");
	
	System.out.println(h1);
	System.out.println(h2);
	
	System.out.println(h1.equals(h2));
	System.out.println(h1.toppings.containsAll(h2.toppings));
	}
}