java - 计算文本文件中的特定单词 - Java

Question

我有一个文本文件，我想计算我定义的特定单词的总数。

我的代码:

    String word1 = "aa";
    String word2 = "bb";

    int wordCount = 0;

     //creating File instance to reference text file in Java
    File text = new File("D:/project/log.txt");

    //Creating Scanner instnace to read File in Java
    Scanner s = new Scanner(text);

    //Reading each line of file using Scanner class
    while (s.hasNext()) {
        totalCount++;
        if (s.next().equals(word1) || s.next().equals(word2)) wordCount++;
    }

    System.out.println("Word count:  " + wordCount);

但是，它只计算“aa”的数量。它不计算“bb”的数量。可能是什么问题？

Answer 1

正如其他人所说:问题的根源是您调用 next() 两次。只是提示如何使您的算法易于扩展:

Set<String> words = new HashSet<>(Arrays.asList("aa", "bb"));
...
while (s.hasNext()) {
    totalCount++;
    if (words.contains(s.next())) wordCount++;
}