Question

嘿我正在编写一个计算文本文件的单词，句子，元音，字符等的程序。我想使用toString（）来连接所有类和结尾并以格式返回它们：{filename}：{character count} c {vowel count} v {word count} w {line count} l {sentence count }秒。我遇到了int类的问题。前(charCount.toString())'c' + ....这是我的代码到目前为止。谢谢

import java.io.FileInputStream;

public class TextFileAnalyzer {

    public static void main(String[] args) {
        try {
            TextFileAnalyzer mytfa = new TextFileAnalyzer("/Users/patrickmro/Desktop/text.txt");
            System.out.println(mytfa.getCharCount());
            System.out.println(mytfa.getSentenceCount());
            System.out.println(mytfa.getLineCount());
            System.out.println(mytfa.getVowelCount());
        }
        catch (Exception e) {

        }


    }

  // You'll probably want some private fields
    private java.lang.String filePath; 
    private int sentenceCount; 
    private int wordCount; 
    private int charCount;
    private int lineCount; 
    private int vowelCount; 
    private java.lang.String textString;
  /**
   * Constructs a new TextFileAnalyzer that reads from the given file. All file
   * I/O is complete once this constructor returns.
   * @param filePath a path to the file
   * @throws Exception if any errors are generated by the Java API while reading
   *           from the file
   */
  public TextFileAnalyzer(String filePath) throws Exception {
    // This is your job...
      this.filePath = filePath; 
      charCount = 0;
      int prevChar = -1;
      FileInputStream input = new FileInputStream(filePath);
      for(int c = input.read(); c != -1 ; c = input.read()) {
          charCount++; 
          if (c == '.' && prevChar != '.') {
              sentenceCount++;
          }
          if(c == '\n') {
              lineCount++;
          }
          if(Character.isWhitespace(c) && (prevChar != -1 || !Character.isWhitespace(prevChar) )) {
              wordCount++;
          } 
          prevChar = c; 
          if(c == 'A' || c == 'E' || c == 'I'|| c == 'O' || c == 'U') {
              vowelCount++;
          }
          if(c == 'a' || c == 'e' || c == 'i'|| c == 'o' || c == 'u') {
              vowelCount++;
          }

      }

      lineCount++;
      input.close(); 
  }


  /**
   * Returns the number of single-byte characters in the file, including
   * whitespace.
   * 
   * @return the number of characters in the file
   */
   public java.lang.String getfilePath() {
     return this.filePath; 
     }

  public int getSentenceCount() {
      return  sentenceCount ; 
  }
  public int getWordCount() {
      return wordCount  ; 
  }

  public int getCharCount() {
      return charCount ; 
  }

  public int getLineCount() {
      return lineCount ;
  }

  public int getVowelCount() {
      return vowelCount;
  }
  public java.lang.String toString() {

     // {filename}: {character count}c {vowel count}v {word count}w {line count}l {sentence count}s
      return (this.getfilePath())':' + (sentenceCount.toString())'s' + (wordCount.toString())'w';

  }

}

Answer 1

更简单的一个：更改此方法如下，它将起作用（由于字符串连接，在此期间非字符串会自动转换为字符串。

public java.lang.String toString() {
   return this.getfilePath() + ":" + sentenceCount + "s" + wordCount + "w";
}

或者，将int（这是整数的原始数据类型，因此没有类似toString()的方法）替换为Integer（这是一个整数的Java类，将原始int包装在其中，因为它是一个类，它在代码中的任何地方都有toString()}这样的方法，你会很好。

例如替换：

private int sentenceCount;

使用：

private Integer sentenceCount;

同时将方法的返回类型从int更改为Integer。

Answer 2

int是Java中的基本类型，因此没有与之关联的方法。但是，您不需要使用toString()，这应该可以正常工作 return this.getfilePath() +':' + sentenceCount + 's' + wordCount + 'w';

java int toString（）错误

2 个答案: