java - 从 HashMap 值创建 String[]

Question

有没有办法创建这样的东西:

Map<Integer, String> barHashMap= new HashMap<Integer, String>();
barHashMap.put(1, "bar");

String[] foo = new String[]{barHashMap.values()}
foo[0] // returns "bar";

Answer 1

获取全部Map值为Collection<String> 。比转换Collection<String>至String[] ,

Collection<String> strList=barHashMap.values();
String[] foo=strList.toArray(new String[strList.size()]);