public String peek() {
		try {
			// System.out.println("Starting peek...");
			if(stack.size() == 0) {
				// System.out.println("Returned empty string...");
				return "";
			}
			// System.out.println("Returned something real...");
			return stack.get(stack.size() - 1);
		} catch(ArrayIndexOutOfBoundsException e) {
			System.out.println(stack.size());
		}
		return null;
	}