public static boolean sizeIsEmpty()

in src/main/java/org/apache/commons/collections4/CollectionUtils.java [1906:1933]

• 28 lines of code
• 9 McCabe index (conditional complexity)

    public static boolean sizeIsEmpty(final Object object) {
        if (object == null) {
            return true;
        }
        if (object instanceof Collection<?>) {
            return ((Collection<?>) object).isEmpty();
        }
        if (object instanceof Iterable<?>) {
            return IterableUtils.isEmpty((Iterable<?>) object);
        }
        if (object instanceof Map<?, ?>) {
            return ((Map<?, ?>) object).isEmpty();
        }
        if (object instanceof Object[]) {
            return ((Object[]) object).length == 0;
        }
        if (object instanceof Iterator<?>) {
            return !((Iterator<?>) object).hasNext();
        }
        if (object instanceof Enumeration<?>) {
            return !((Enumeration<?>) object).hasMoreElements();
        }
        try {
            return Array.getLength(object) == 0;
        } catch (final IllegalArgumentException ex) {
            throw new IllegalArgumentException("Unsupported object type: " + object.getClass().getName());
        }
    }