java - 如何使用扫描仪使用文件中的文本填充数组，然后从数组中随机选择文本？

Question

我有一个包含电影列表的文本文件:

Kangaroo Jack
Superman
Shawshank Redemption
Aladdin

我想要做的是将所有这些胶片传递到一个数组中，然后从数组中随机选择一个胶片。然而，它似乎总是选择“阿拉丁”，我不确定我做错了什么？如何从数组中随机选择电影？

public static void main(String[] args) throws FileNotFoundException {

    String[] movieList = {};
    File file = new File("xxx\\listofmovies.txt");
    Scanner fileScanner = new Scanner(file);
    Scanner scanner = new Scanner(System.in);
    Random random = new Random();

    while (fileScanner.hasNextLine()) {
        String line = fileScanner.nextLine();
        // Reads the whole file
        movieList = line.split("//s");
        //splits the string by white space characters meaning we will get the full word(s) per line
    }

    boolean weArePlaying = true;
    while (playing) {

        char[] randomWordToGuess = movieList[random.nextInt(movieList.length)].toLowerCase().toCharArray();
        int wordLength = randomWordToGuess.length;
        char[] playerGuess = new char[wordLength];
        boolean wordCompleted = false;
...
}

Answer 1

movieList = Line.Split("//") 此行始终用文件中的最后一行覆盖 movielist:Alladin

最好像下面这样写:

ArrayList<String> movieList = new ArrayList<>();
while (fileScanner.hasNextLine()) {
    String line = fileScanner.nextLine();
    movieList.add(line);
}

值得注意的是，如果所有电影名称都在同一行并且名称之间没有白色香料，那么您最初的方法就会成功，如下所示:

袋鼠 jack 超人肖申克的救赎阿拉丁

循环也不是必要的。所以它可以写成这样:

String[] movieList = {};
String line = fileScanner.nextLine();
movieList = line.split("//s");

如果你想变得非常狂野......

String[] movieList = fileScanner.nextLine().split("//");