Java 數組和集合的相互轉換

        System.out.println("-----數組轉list-----");
        String[] strs1 = new String[] {"1", "2", "3"};
        List<String> asList = Arrays.asList(strs1);

        asList.forEach(s -> System.out.println(s));

        System.out.println("---List 轉 數組-----");
        List<String> numbers = new ArrayList<>();
        numbers.add("1");
        numbers.add("2");
        numbers.add("2");
        String[] strs2 = new String[numbers.size()];

        numbers.toArray(strs2);

        for (String string : strs2) {
            System.out.println(string);
        }

輸出:

-----數組轉list-----
1
2
3
---List 轉數組-----
1
2
2