文章目录
- 将 List 转 数组
- List.toArra()
- Stream().toArray()
- 将 数组 转 List
- Lists.newArrayList()
- Stream.of()
将 List 转 数组
List.toArra()
List<Integer> list = Lists.newArrayList(1, 2, 3);
Integer[] intArray = list.toArray(new Integer[0]);
Stream().toArray()
List<Integer> list = Lists.newArrayList(1, 2, 3);
String[] strArray = list.stream().map(String::valueOf).toArray(String[]::new);
将 数组 转 List
Lists.newArrayList()
String[] arr = {"1", "2", "3"};
List<String> list = Lists.newArrayList(arr);
Stream.of()
String[] arr = {"1", "2", "3"};
List<Integer> list = Stream.of(arr).map(Integer::parseInt).collect(Collectors.toList());
