* @return グルーピング用のセパレータ
     */
    public static String findGroupingSeparator(final Locale locale) {
        final DecimalFormatSymbols symbol = getDecimalFormatSymbols(locale);
        return Character.toString(symbol.getGroupingSeparator());
    }

    /**
     * 数値のセパレータを返します。
     *
     * @param locale
     *            ロケール
     * @return 数値のセパレータ
     */

        final String delim = NumberConversionUtil.findDecimalSeparator(null);
        final char c = new DecimalFormatSymbols(LocaleUtil.getDefault()).getDecimalSeparator();
        assertEquals(Character.toString(c), delim);
    }

    /**
     * @throws Exception
     */
    public void testFindIntegerDelimeter() throws Exception {

        if (isEmpty(name)) {
            return name;
        }
        final char[] chars = name.toCharArray();
        if (chars.length >= 2 && Character.isUpperCase(chars[0]) && Character.isUpperCase(chars[1])) {
            return name;
        }
        chars[0] = Character.toLowerCase(chars[0]);
        return new String(chars);
    }

    /**
     * JavaBeansの仕様にしたがってキャピタライズを行ないます。大文字が2つ以上続く場合は、小文字にならないので注意してください。

        final StringBuilder buf = new StringBuilder(pattern.length());
        for (int i = 0; i < pattern.length(); ++i) {
            final char ch = pattern.charAt(i);
            if (Character.isLetterOrDigit(ch) || Character.isWhitespace(ch)) {
                buf.append(ch);
            }
        }
        if (buf.indexOf("yy") == -1) {
            final int pos = buf.indexOf("y");
            if (pos != -1) {

        final StringBuilder buf = new StringBuilder(pattern.length());
        for (int i = 0; i < pattern.length(); ++i) {
            final char ch = pattern.charAt(i);
            if (Character.isLetterOrDigit(ch) || Character.isWhitespace(ch)) {
                buf.append(ch);
            }
        }
        if (buf.indexOf("yy") == -1) {
            final int pos = buf.indexOf("y");
            if (pos != -1) {

        final StringBuilder buf = new StringBuilder(pattern.length());
        for (int i = 0; i < pattern.length(); ++i) {
            final char ch = pattern.charAt(i);
            if (Character.isLetterOrDigit(ch) || Character.isWhitespace(ch)) {
                buf.append(ch);
            }
        }
        if (buf.indexOf("HH") == -1) {
            final int pos = buf.indexOf("H");
            if (pos != -1) {

    protected static final Map<String, Class<?>> primitiveNameToClassMap = newHashMap();

    static {
        wrapperToPrimitiveMap.put(Boolean.class, Boolean.TYPE);
        wrapperToPrimitiveMap.put(Character.class, Character.TYPE);
        wrapperToPrimitiveMap.put(Byte.class, Byte.TYPE);
        wrapperToPrimitiveMap.put(Short.class, Short.TYPE);
        wrapperToPrimitiveMap.put(Integer.class, Integer.TYPE);

        array[1] = null;
        assertThat(ArrayUtil.indexOf(array, null), is(1));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testIndexOf_character() throws Exception {
        final char[] array = new char[] { 'a', 'b', 'c' };
        assertThat(ArrayUtil.indexOf(array, 'a'), is(0));
        assertThat(ArrayUtil.indexOf(array, 'd'), is(-1));
    }

    /**

    public static Boolean[] asArray(final Boolean... elements) {
        return elements;
    }

    /**
     * {@literal Character}の配列を返します。
     *
     * @param elements
     *            配列の要素
     * @return 配列
     */
    public static Character[] asArray(final Character... elements) {
        return elements;
    }

    /**
     * {@literal Byte}の配列を返します。
     *
     * @param elements