@Test
public void testMap2List() throws Exception{ Map<String, String> map = new HashMap<String, String>(); map.put("1", "AA"); map.put("2", "BB"); map.put("3", "CC"); map.put("4", "DD"); Collection<String> valueCollection = map.values(); final int size = valueCollection.size(); List<String> valueList = new ArrayList<String>(valueCollection); String[] valueArray = new String[size]; map.values().toArray(valueArray);}