java - 当我的文件位于正确的文件夹中时，为什么我一直从我的 catch 异常中获取 "File not found."？

Question

我基本上是在写一个刽子手游戏，我让程序从我的 .txt 文件中读取这四个字母的单词。我已将 .class 和 .txt 文件复制到程序的 src 文件夹中，它仍然打印出“找不到文件”。我在我的 RandomWordProvider 类中写的。这是代码:

public class WordGuessingGame {

static class RandomWordProvider {

private final List<String> words;

public RandomWordProvider() {
    words = readFile();
}

private int randomInteger() {
    int randomInt = (int) (Math.random() * words.size());
    return randomInt;
}

public String getWord(int randomInt, String line) {
    int randomPosition = randomInteger();
    String randomWord = words.get(randomPosition);
    return randomWord;
}

private List<String> readFile() {

    List<String> wordsList = new ArrayList<>();

    try {
        String fileName = "FourLetterWords.txt";
        File fourLetterWords = new File(fileName);
        Scanner in = new Scanner(fourLetterWords);

        while (in.hasNextLine()) {
            String line = in.nextLine();
            if (line!=null && !line.isEmpty()) {
                wordsList.add(line);
            }
        }
    } catch (FileNotFoundException ex) {
        System.out.println("File not found.");
    }

    return wordsList ;
    }
}

static class PlayerCharacterEntry {

    public String playerEntry() {
        Scanner characterEntry = new Scanner(System.in);
        System.out.print("Enter a character: ");
        String playerInput = characterEntry.next();
        playerInput = playerInput.toUpperCase();
        return playerInput;
    }
}

public static void main(String[] args) {

Scanner wantToPlay = new Scanner(System.in);
System.out.print("Welcome to the word guessing game! Would you like to play? ");
String playerAnswer = wantToPlay.next();

if (playerAnswer.equals("Yes") || playerAnswer.equals("yes")) {
    System.out.print("\nYour objective is to guess a four letter word by entering"
            + "\nletters on your keyboard. If you can not guess the word in seven attempts,"
            + "\nyou lose! You will be told if the letter you entered is in the word, and"
            + "\nyou will be told if the letter you entered is not in the word. You will be"
            + "\nallowed to guess the word any time during your seven attempts. If at anytime"
            + "\nyou would like to terminate the game, enter the word 'terminate'. Good Luck!");
}
if (playerAnswer.equals("No") || playerAnswer.equals("no")) {
    System.out.print("Maybe another time!");
}
RandomWordProvider randomWordProvider = new RandomWordProvider();
PlayerCharacterEntry playerCharacterEntry = new PlayerCharacterEntry();

String playerInput;
String randomWord;


}
}

很明显它在做“尝试”，但它没有工作，它只是在做找不到的文件，但我不知道为什么。有人可以帮助我吗？

Answer 1

如果您不想指定硬编码路径，这里是从您的类路径获取文件的想法:

        try {
            URL url = RandomWordProvider.class.getResource("FourLetterWords.txt");
            File fourLetterWords = new File(url.toURI());
            Scanner in = new Scanner(fourLetterWords);
            ....
        }