code for reading a text file and returning it's length.

Test.java

import java.io.*;

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

       
        String fileName = "abc.txt";

        
        String line = null;

        try {
            
            FileReader fileReader = 
                new FileReader(fileName);

            
            BufferedReader bufferedReader = 
                new BufferedReader(fileReader);

            while((line = bufferedReader.readLine()) != null) {
                System.out.println(line);
            }   

           
            bufferedReader.close();
            
            System.out.println("total length of the file :" + fileName.length());
        }
        catch(FileNotFoundException ex) {
            System.out.println(
                "Unable to open file '" + 
                fileName + "'");                
        }
        catch(IOException ex) {
            System.out.println(
                "Error reading file '" 
                + fileName + "'");                  
            // Or we could just do this: 
            // ex.printStackTrace();
        }
    }
}