找不到Java .txt文件

Question

For an assignment I need to call a method from another class SentenceChecker which uses a .txt file web2.txt. I have placed Cryptography.java (in which I'm calling the method), Cryptography.class, SentenceChecker.java, SentenceChecker.class and the web2.txt files all in the same folder, and changed permissions for read and write for everyone but file still cannot be found. Please advise me on what to do? This is the code:

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;

public class SentenceChecker {

final static int NUMBER_WORDS = 234936;

public static String[] wordList = initializeList();

public static int countEnglishWords(String input) {
 String[] allWords = input.split(" ");
 int totalWords = 0;
 for (int i=0; i < allWords.length; i++) {
 String transformed = allWords[i].toLowerCase();
 transformed = transformed.replaceAll("[^A-Za-z]", "");
 if (findWord(transformed)) {
  totalWords++;
     }
 }

 return totalWords;
}

private static boolean findWord(String input) {
 int left = 0;
 int right = wordList.length - 1;
 while (left <= right) {
 int center = (left + right ) / 2;
 if (wordList[center].equals(input)) {
  return true;
 }

 if (wordList[center].compareTo(input) < 0) {
  left = center + 1;
 }
 else {
  right = center - 1;
 }
 }

 return false;
}

private static String[] initializeList() {
 try {
 Scanner scanner = new Scanner(new File("web2.txt"));
 String[] words = new String[NUMBER_WORDS];
 int i=0;

 while (scanner.hasNextLine()) {
  words[i] = scanner.nextLine().toLowerCase();
  i++;
 }
 return words;
 }
 catch (FileNotFoundException e) {
 System.out.println("WARNING: The file web2.txt was not found. Is it in the same directory as your other java files?");

 return null;
 }
    }
}

Answer 1

The line new File("web2.txt") is a path which is relative to your current working directory , which is not necessarily where your files are.

Assuming web2.txt is in your classpath, you should try something like this:

URL path = ClassLoader.getSystemResource("web2.txt");
File f = null;
if(path != null) { // file exists
     f = new File(path.toURI());
} else {
   //The file was not found, insert error handling here
}

Answer 2

另一种解决方案是将其放置在某个位置（例如，您的桌面），然后使用路径“ C：\\ Users \\ Name \\ Desktop \\ web2.txt”访问它。