Question

我不知道如何添加行计数器，因为如果我执行一些while语句，例如

while (fileReader.hasNextLine()) {
    lines+=1;
    file.nextLine();
}

然后我的其余元音，句子等都设置为0.

我的代码是：

Scanner input = new Scanner(System. in );
System.out.println("Enter file name: ");

File file = new File(input.nextLine());

if (file.length() == 0) {
    System.out.println("The input file is empty.");
    System.exit(1);
}

Scanner fileReader = new Scanner(file);

while (fileReader.hasNext()) {
    String word = fileReader.next();

    for (int i = 0; i < word.length(); i++) {
        char ch = word.charAt(i);
        if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') vowels += 1;
        if ((ch == '!' || ch == '.' || ch == '?')) sentences += 1;
        if (Character.isLetterOrDigit(ch)) alphaNumeric += 1;
        switch (ch) {
            case ',':
                punctuation += 1;
                break;
            case '[':
                punctuation += 1;
                break;
            case ']':
                punctuation += 1;
                break;
            case ':':
                punctuation += 1;
                break;
            case '`':
                punctuation += 1;
                break;
            case '-':
                punctuation += 1;
                break;
            case '!':
                punctuation += 1;
                break;
            case '_':
                punctuation += 1;
                break;
            case '(':
                punctuation += 1;
                break;
            case ')':
                punctuation += 1;
                break;
            case '.':
                punctuation += 1;
                break;
            case '?':
                punctuation += 1;
                break;
            case '"':
                punctuation += 1;
                break;
            case ';':
                punctuation += 1;
                break;

        }
    }
    words += 1;

}
System.out.println("The number of words in the file name: " + words);
System.out.println("The number of lines in the file name: " + lines);
System.out.println("The number of alphanumeric characters " + "in the file name: " + alphaNumeric);
System.out.println("The number of sentences in the file name: " + sentences);
System.out.println("The number of vowels in the file name: " + vowels);
System.out.println("The number of punctuations in the file name: " + punctuation);

Answer 1

换行符由字符'\ n'表示。你可以检查它的实例，就像检查元音，标点符号等一样。

Answer 2

使用这些行

   String line = fileReader.nextLine();

   for (int i = 0; i < line.length(); i++) {
                 char ch = line.charAt(i);
                 if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') vowels += 1;
                 if ((ch == '!' || ch == '.' || ch == '?')) sentences += 1;
                 if (Character.isLetterOrDigit(ch)) alphaNumeric += 1;
                 switch (ch) {
                    // do something

                 }
             }
             lines ++;
             words += line.split(" ").length;

在原始代码中，单词只是行。他们不是这样的话。

有人帮我在读取此文件时为我的代码添加行计数器

2 个答案: