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(""));
        assertEquals("3", true, StringUtil.isNotBlank("a"));