Java集合转数组 数组转集合的几种常用方式[通俗易懂]

        // 数组 转集合
        String[] array = new String[]{ 
   "1","2","3"};
        //方式1
        List<String> list = Arrays.asList(array);
        //方式2
        List<String> collect = Arrays.stream(array).collect(Collectors.toList());

        // 集合转数组
        List<String> newStrList = new ArrayList<>();
        //方式1
        String[] strings1 = (String[]) newStrList.toArray();
        //方式2
        String[] strings2 = newStrList.toArray(new String[]{ 
   });