如何让 java 告诉我文件中正确的行数和字数？

Question

我正在学习如何创建一个程序来读取 class 中的文件。我只能得到 java 来告诉我文件中正确的字数而不是正确的行数。如何让 java 告诉我文件中正确的行数和字数？

public class Reader { public static void main(String args[]) 抛出 IOException {

BufferedReader demo = new BufferedReader(new FileReader("All.txt"));

Scanner file = new Scanner(demo);

int lineCount = 0;
int wordCount = 0;

//单词计数器

while(file.hasNextLine()) {
  String amount = file.nextLine();

  String[] txt = amount.split(" ");
  for(int i = 0; i < txt.length; i++){
    if(txt[i].contains(txt[i]))
    wordCount++;
  }
}
System.out.println("There are  " + wordCount + " words.");

//lineCounter -- 这就是我的问题所在

String line = demo.readLine();
while(line != null){
  lineCount++;
  line = demo.readLine();

}
System.out.println("There are " + lineCount + " lines.");

} }

Answer 1

您可以在统计字数的同时统计行数，如下图：

while(file.hasNextLine()) {
  lineCount++;// Add this line
  String amount = file.nextLine();
  String[] txt = amount.split(" ");
  wordCount += txt.length;// Add this line
}
System.out.println("There are  " + wordCount + " words.");
System.out.println("There are  " + lineCount + " lines.");// Add this line

Answer 2

你可以使用这个：

要计算句子，请将每行拆分为 .、!、?。

用space来统计分词就够了。

import java.io.*;

public class File {

    public static void main(String[] args) throws IOException {
        
        BufferedReader demo = new BufferedReader(new FileReader("/home/asn/Desktop/All.txt"));
        
        int lineCount = 0;
        int wordCount = 0;
        String line;

        while((line=demo.readLine())!=null)  {
            String[] words = line.split(" ");
            String[] sen = line.split("\.|\!|\?");  // this a a regex expression to split with ., !, and ?

            lineCount += sen.length;
            wordCount += words.length;
          }
          System.out.println("There are  " + wordCount + " words.");
          System.out.println("There are  " + lineCount + " lines.");

          demo.close();
    }
}

如何让 java 告诉我文件中正确的行数和字数？

How can I get java to tell me the correct amount of lines and words in a file?

java

file

bufferedreader