ArrayList和数组Array之间的转换

数组转换成ArrayList：

List stooges = Arrays.asList("Larry", "Moe", "Curly");

String[] words = {"ace", "boom", "crew", "dog", "eon"};         
List<string> wordList = Arrays.asList(words);

ArrayList转换成数组：

List list = new ArrayList();
list.add("1");
list.add("2");
final int size =　list.size();
String[] arr = (String[])list.toArray(new String[size]);