// package chap456;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class WordWrap3 {

    public static void wordWrap3(Scanner input) {

        // this loop continous as long as input has next line
        while (input.hasNextLine()) {
            String inputLine = input.nextLine();

            // 
            while (inputLine.length() > 60) {
                int maxLength = 60;

                // if there's no white space at max length, set max length to -1
                while (!Character.isWhitespace(inputLine.charAt(maxLength)))
                    maxLength -= 1;
                // create substring from 0 to max length
                System.out.println(inputLine.substring(0, maxLength));
       
                 
                while (maxLength < inputLine.length() && Character.isWhitespace(inputLine.charAt(maxLength)))
                    maxLength += 1;

                inputLine = inputLine.substring(maxLength);
            }

            System.out.println(inputLine);
        }
    }

   // driver method
    public static void main(String[] args) throws FileNotFoundException {
   // give the path acc to your system     
   String str = System.getProperty("user.dir") + "\\resources\\wordwrap3.txt";
        File file = new File(str);
        Scanner input = new Scanner(file);

        wordWrap3(input);

    }

}

input file: wordwrap3.txt

Black holes are some of the strangest and most fascinating objects in outer space. They're extremely dense, with such strong gravitational attraction that even light cannot escape their grasp if it comes near enough.

Output:

Black holes are some of the strangest and most fascinating
objects in outer space. They're extremely dense, with such
strong gravitational attraction that even light cannot
escape their grasp if it comes near enough.