我正在尝试编写一个读取文本文件的方法，并且对于每一行，打印出该行中的单词数

I think the title is self explanatory. I'm trying to print how many words are in each line of a text file, the following is what I have so far:

我认为标题是自我解释的。我正在尝试打印文本文件的每一行中有多少单词,以下是我到目前为止的内容:

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

public class WordNumberer
{
  public static void main(String[] args) throws FileNotFoundException
  {
    File file = new File("story.txt");
    Scanner scanner = new Scanner(file);
    int wordCount = 0;

    while (scanner.hasNextLine())
    {
        while (scanner.hasNext())
        {
          wordCount += 1;
          System.out.println(wordCount);
        }
    }
    scanner.close();
  }
}

2 个解决方案

#1

You should print the result outside of second while loop and you need to reset count before you start counting for next line.

您应该在第二个while循环之外打印结果,并且需要在开始计算下一行之前重置计数。

    while (scanner.hasNextLine()){               
       while (scanner.hasNext()){
           wordCount += 1;
       }
       System.out.println(wordCount);
       wordCount = 0;
     }

#2

while (scanner.hasNext()) is an infinite loop if you don't consume the next token, you have the same problem with while (scanner.hasNextLine()) if you don't consume the line .

while(scanner.hasNext())是一个无限循环,如果你不使用下一个标记,如果你不使用该行,则while(scanner.hasNextLine())会遇到同样的问题。

Other than that, as other people already pointed pout, you should print the count only at the end of the line, then reset the counter to 0.

除此之外,正如其他人已经指出pout,你应该只在行的末尾打印计数,然后将计数器重置为0。

while (scanner.hasNextLine())
    {
        while (scanner.hasNext())
        {
          wordCount += 1;
          scanner.next();// consume token

        }

        System.out.println(wordCount);// print count for the current line
        wordCount  = 0; // reset counter
        scanner.nextLine();//consume line
    }

#1