Hang子手遊戲不從文件中讀取

Question

該程序應該從.txt文件中選取一個隨機單詞，讓用戶嘗試猜測單詞中的字母。它運行，但它總是說「信中沒有找到字」，即使我知道這是所有字都有的字母。這讓我覺得它沒有正確讀取我的.txt文件。

package hangman; 

import java.io.File; 
import java.io.FileNotFoundException; 
import java.util.ArrayList; 
import java.util.Arrays; 
import java.util.Random; 
import java.util.Scanner; 
public class Hangman{ 



public static void main(String[] args) { 

    ArrayList<String> dictionaryList = new ArrayList<>(); 
    File file = new File("src/hangman.txt"); 
     try { 
     try (Scanner scanner = new Scanner(file)) { 
      while (scanner.hasNextLine()) { 
       String line = scanner.nextLine(); 
       dictionaryList.add(line); 
      } 
     } 
     } catch (FileNotFoundException e) { 
     } 

     /* 
     * Getting the word and hiding it 
     */ 

     Random rng = new Random(); 
     int word = rng.nextInt(dictionaryList.size()); //randomly chooses a word from the text file 
     Scanner scanner = new Scanner(System.in); 
     int guessesLeft = 6; // the total amount of guesses the user gets 
     ArrayList<Character> alreadyGuess = new ArrayList<>(); // keep tracks of the user's guesses 
     boolean wordFound = false; // keeps track of when the game will end after the user runs out of guesses 


     String wordSelected = dictionaryList.get(word); //converts the int value of the randomly choose word to a string 
     char[] letters = wordSelected.toCharArray(); // converts the word to a char 
     char[] hideWord = new char[letters.length]; // gets the length of hiding the word 


     // the for loop hides the word by replacing it with '_' 
     for(int i = 0; i < letters.length; i++) { 
      hideWord[i]='_'; 
     } 

     /* 
     * Starts the hangman game. The while loop will keep running the game. 
     */ 

     while(true){ 

      //for testing purposes they can use the print statement below to replace the other print statement 
      //System.out.print("\n" + wordSelected + "\n" + "Word: "); 
      System.out.print("\n" + "Word: "); 
      for(int i = 0; i < letters.length; i++){ 
       System.out.print(hideWord[i]); 
      } // Display the word 

      // Allows user to input and displays the guesses that are left 
      System.out.print("\n" + "Guesses Left: " + guessesLeft +"\nAlready Guess: " + alreadyGuess + "\nGuess: "); 
      char userInput = scanner.nextLine().toUpperCase().charAt(0); // uppercase the String first, and then pick the char 

      // Checks to see if the user already guess the same word 
      for(int i = 0; i < alreadyGuess.size(); i++){ 
       if(userInput==alreadyGuess.get(i)){ 
        System.out.println("\nYou already guessed this letter. Try Again. "); 
        break; 
       } 
      } 

      // records the user's guesses 
      if(!(alreadyGuess.contains(userInput))){ 
       alreadyGuess.add(userInput); 
      } 


      // Checks if the user guesses the right letter in the word 
      for(int i = 0; i < letters.length; i++) { 
       if(userInput==letters[i]) { 
        hideWord[i] = userInput; 
        wordFound = true; 

       } 
      } 


     // If user guesses the incorrect letter it will display this and lower the amount of guesses 
     if(!wordFound){ 
      System.out.println("\nThe letter was not found in the word. \n"); 
      guessesLeft = 1; 
     } 


     wordFound = false; // resets the wordFound boolean back to false 

     // if user runs out of guesses left, they will lose. 
     if(guessesLeft<=0){ 
      System.out.println("\nYou lose, you hanged the man."); 
      break; 
     } 

     // if user guesses correctly on the word, they win. Uses the array class to compare two char arrays 
     if(Arrays.equals(letters,hideWord)){ 
      System.out.println("\nWord: " + wordSelected); 
      System.out.println("\nCongratulations! You guess the right word and save the man from being hang."); 
      break; 
     } 


} 
    } 
} 

Answer 1

永遠不會忽略和忽視異常！在程序這樣的頂部更改catch子句：

catch (FileNotFoundException e) { 
    e.printStackTrace(); 
} 

，這樣你就會至少有一個暗示，如果事情發生了不好，而你試圖閱讀你的單詞列表。

這是一個重要的課程，它以粗體顯示：永遠不會忽略和忽略異常！