class EqualityUtils {

    private EqualityUtils() {}

    public static boolean pairsEqual(Object... objects) {
        if (objects.length < 2) {
            throw new IllegalArgumentException("At least two arguments must be provided.");
        }
        if (objects.length % 2 == 1) {
            throw new IllegalArgumentException("Even number of arguments is required.");
        }
        int i = 0;
        while (i < objects.length) {
            if (!objectsEqual(objects[i], objects[i + 1])) {
                return false;
            }
            i += 2;
        }
        return true;
    }

    public static boolean objectsEqual(Object a, Object b) {
        return a == b || (a != null && a.equals(b));
    }

    public static Object println(String message) {
        System.out.println(message);
        return message;
    }

    public static void main(String... args) {
        System.out.println(pairsEqual(1, 2, println("Hello"), println("Hello")));
        System.out.println(pairsEqual(1, 1, println("Hello"), println("Hello")));
    }

}