Java8 List与String进行互转

Java8-ListChangeString

public class ListChangeString {

    public static void main(String[] args) {

        List list1 = Arrays.asList("文学","小说","历史","言情","科幻","悬疑");

        List list2 = Arrays.asList("文学","小说","历史","言情","科幻","悬疑");

        //方案一：使用String.join()函数，给函数传递一个分隔符合一个迭代器，一个StringJoiner对象会帮助我们完成所有的事情
        String string1 = String.join("-",list1);

        System.out.println(string1);

        //方案二：采用流的方式来写
        String string2 = list2.stream().collect(Collectors.joining("-"));

        System.out.println(string2);
    }
}

Java8-StringChangeList

public class StringChangeList {
    public static void main(String[] args) {

        String string= "文学-小说-历史-言情-科幻-悬疑";

        List list = Arrays.asList(string.split("-")).stream().map(s -> String.format(s.trim())).collect(Collectors.toList());

        System.out.println(list);
    }
}