Java用户输入的字和行计数器

Question

我已经完成了这段代码，它正确地打印了总行数，但对于总字数，它总是打印1个字。谁能帮帮我，谢谢

import java.util.*;

public class LineAndWordCounter{
  public static void main(String[]args){



    Scanner scan = new Scanner(System.in);
    while(scan.hasNext()){
      String line = scan.next();

      linesCounter(scan);
      wordsCounter(new Scanner(line) );


    }


  }

  public static void linesCounter(Scanner linesInput){
    int lines = 0;
    while(linesInput.hasNextLine()){
      lines++;
      linesInput.nextLine();
    }
    System.out.println("lines: "+lines);
  }

  public static void wordsCounter(Scanner wordInput){
    int words = 0;
    while(wordInput.hasNext()){
      words++;
      wordInput.next();
    }
    System.out.println("Words: "+words);
  }




}

Answer 1

scan.next()

返回下一个“单词”

如果你用一个单词创建一个新的^{，它只会看到一个单词

这将发生在

String line = scan.next();
wordsCounter(new Scanner(line) );

Answer 2

这在我看来相当复杂

只需将每一行保存在ArrayList中，并将单词累积到变量中即可。 比如：

List<String> arrayList = new ArrayList<>();
int words = 0;

Scanner scan = new Scanner(System.in);
while (scan.hasNext()) {
  String line = scan.nextLine();
  arrayList.add(line);
  words += line.split(" ").length;
  System.out.println("lines: " + arrayList.size());
  System.out.println("words: " + words);
}

scan.close();

您也不应该忘记调用close()方法来避免资源泄漏