如何让java告诉我文件中正确的行和字的数量？

Question

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

Scanner file = new Scanner(demo);

int lineCount = 0;
int wordCount = 0;

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.");

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

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

Answer 1

您可以使用以下内容：

要计算句子，请用.、！、？拆分每一行。

要计算单词，用空格拆分就足够了。

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();
    }
}