Method indexOf

vm/JavaAPI/src/java/util/ArrayList.java:418–436

(Object object)

    }

    @Override
    public int indexOf(Object object) {
        // REVIEW: should contains call this method?
        int lastIndex = firstIndex + size;
        if (object != null) {
            for (int i = firstIndex; i < lastIndex; i++) {
                if (object.equals(array[i])) {
                    return i - firstIndex;
                }
            }
        } else {
            for (int i = firstIndex; i < lastIndex; i++) {
                if (array[i] == null) {
                    return i - firstIndex;
                }
            }
        }
        return -1;
    }

    @Override
    public boolean isEmpty() {