@Override
    public boolean hasNext() {
        for (; index < iterators.length; ++index) {
            if (iterators[index].hasNext()) {
                return true;
            }
        }
        return false;
    }

    @Override
    public E next() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        return iterators[index].next();
    }

    @Override

     * @return 停止したかどうか
     */
    protected synchronized boolean stopIfLeisure() {
        if (timeoutTaskList.isEmpty()) {
            thread = null;
            return true;
        }
        return false;
    }

        if (array1 == null && array2 == null) {
            return true;
        } else if (array1 == null || array2 == null) {
            return false;
        }
        if (array1.length != array2.length) {
            return false;
        }
        final T[] copyOfArray2 = Arrays.copyOf(array2, array2.length);
        for (int i = 0; i < array1.length; i++) {
            final T o1 = array1[i];

                if (element.equals(e.element)) {
                    e.remove();
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * 指定した位置の要素を削除します。
     *
     * @param index
     *            位置
     * @return 削除された要素
     */
    public Object remove(final int index) {

        }
        if (value4 == null) {
            if (other.value4 != null) {
                return false;
            }
        } else if (!value4.equals(other.value4)) {
            return false;
        }
        if (value5 == null) {
            if (other.value5 != null) {
                return false;
            }
        } else if (!value5.equals(other.value5)) {
            return false;
        }

            return false;
        }
        if (value2 == null) {
            if (other.value2 != null) {
                return false;
            }
        } else if (!value2.equals(other.value2)) {
            return false;
        }
        if (value3 == null) {
            if (other.value3 != null) {
                return false;
            }
        } else if (!value3.equals(other.value3)) {

        assertEquals("3", false, StringUtil.isBlank("a"));
        assertEquals("4", false, StringUtil.isBlank(" a "));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testIsNotBlank() throws Exception {
        assertEquals("1", false, StringUtil.isNotBlank(" "));
        assertEquals("2", false, StringUtil.isNotBlank(""));

        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        @SuppressWarnings("unchecked")
        final Pair<T1, T2> other = (Pair<T1, T2>) obj;
        if (first == null) {
            if (other.first != null) {
                return false;
            }
        } else if (!first.equals(other.first)) {

     * StringUtils.isAsciiPrintable("\u007f") = false
     * StringUtils.isAsciiPrintable("Ceki G\u00fclc\u00fc") = false
     * </pre>
     *
     * @param cs the CharSequence to check, may be null
     * @return {@code true} if every character is in the range 32 thru 126
     */
    public static boolean isAsciiPrintable(final CharSequence cs) {
        if (cs == null) {
            return false;
        }

        if (now - lastChecked < checkInterval) {
            lastChecked = now;
            return false;
        }
        lastChecked = now;

        final long timestamp = propertiesFile.lastModified();
        if (timestamp <= lastModified) {
            return false;
        }

        return true;
    }

    public synchronized void load() {