@Test public void testClassDomMethods() { Document doc = Jsoup.parse("<div><span class=' mellow yellow '>Hello <b>Yellow</b></span></div>"); List<Element> els = doc.getElementsByAttribute("class"); Element span = els.get(0); assertEquals("mellow yellow", span.className()); assertTrue(span.hasClass("mellow")); assertTrue(span.hasClass("yellow")); Set<String> classes = span.classNames(); assertEquals(2, classes.size()); assertTrue(classes.contains("mellow")); assertTrue(classes.contains("yellow")); assertEquals("", doc.className()); classes = doc.classNames(); assertEquals(0, classes.size()); assertFalse(doc.hasClass("mellow")); }