java数组与集合相互转换

//数组转集合
String[] strArr = {"AA","BB","CC"};
List<String> list = Arrays.asList(strArr);

//集合转数组
List<String> list = new ArrayList<>();
list.add("AA");
list.add("BB");
list.add("CC");
String[] strArr = list.toArray(new String[0]);