Question

How to count the number of lines in text file in Java

Answer 1

package javaapplication1;

import java.io.BufferedReader;
import java.io.FileReader;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            try (BufferedReader reader = new BufferedReader(new FileReader("d:\\data.txt"))) {
                long lines = reader.lines().count();
                System.out.println("Lines: " + lines);
            }

        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}

/*
                   
run:
      
Lines: 3
          
 */

 

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