String数组转List，List转String数组

1、List转为String 数组

List<String> list = new ArrayList<String>();
list.add("a1");
list.add("a2");
String[] toBeStored = list.toArray(new String[list.size()]);
for(String s : toBeStored) {
System.out.println(s);
}

2、String数组转为List
String[] arr = new String[] {"1", "2"};
List list = Arrays.asList(arr);