List集合和数组如何相互转换

//将List集合转换为数组
List<String> list= new ArrayList<String>();
list.add("李怡欣");
list.add("许文静");
list.add("小磊子");
String [] result = list.toArray(new String[list.size()]);
for (int i = 0; i < result.length; i++) {
    System.out.println(result[i]);
}
//将数组转换为List集合
List<String> res = Arrays.asList(result);
for (String re : res) {
    System.out.println(re);
}