public static boolean containsAll()

in src/main/java/org/apache/commons/collections4/CollectionUtils.java [429:455]

• 25 lines of code
• 7 McCabe index (conditional complexity)

    public static boolean containsAll(final Collection<?> coll1, final Collection<?> coll2) {
        Objects.requireNonNull(coll1, "coll1");
        Objects.requireNonNull(coll2, "coll2");
        if (coll2.isEmpty()) {
            return true;
        }
        final Set<Object> elementsAlreadySeen = new HashSet<>();
        for (final Object nextElement : coll2) {
            if (elementsAlreadySeen.contains(nextElement)) {
                continue;
            }

            boolean foundCurrentElement = false;
            for (final Object p : coll1) {
                elementsAlreadySeen.add(p);
                if (Objects.equals(nextElement, p)) {
                    foundCurrentElement = true;
                    break;
                }
            }

            if (!foundCurrentElement) {
                return false;
            }
        }
        return true;
    }