Matura 2015 zadanie 4

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

public class Zadanie
{
    public static int moreZerosThanOnes = 0;
    public static int divisibleBy2 = 0;
    public static int divisibleBy8 = 0;
    public static String theGreatestNumber = "0";
    public static String theSmallestNumber = "100000000000000000000000";
    public static int rowOfTheGreatestNumber = 0;
    public static int rowOfTheSmallestNumber = 0;

    public static void main(String[] args) throws IOException
    {
        FileReader file = new FileReader("path\to\the\text\file");
        BufferedReader reader = new BufferedReader(file);
        String line = reader.readLine();

        int row = 1;
        while (line != null)
        {
            hasMoreZerosThanOnes(line);
            isDivisibleBy2or8(line);
            findExtremeNumbers(line, row);

            line = reader.readLine();
            row++;
        }
        reader.close();

        System.out.println("Liczb gdzie więcej jest zer niz jedynek: " + moreZerosThanOnes);
        System.out.println("Liczb podzielnych przez 2: " + divisibleBy2);
        System.out.println("Liczb podzielnych przez 8: " + divisibleBy8);
        System.out.println("Numer wiersza z największą liczbą: " + rowOfTheGreatestNumber);
        System.out.println("Numer wiersza z najmniejszą liczbą: " + rowOfTheSmallestNumber);
    }

    public static void hasMoreZerosThanOnes(String line)
    {
        int replaced = line.replace("1", "").length();
        if (2 * replaced > line.length()) moreZerosThanOnes++;
    }

    public static void isDivisibleBy2or8(String line)
    {
        if (line.endsWith("0")) divisibleBy2++;
        if (line.endsWith("000")) divisibleBy8++;
    }

    public static void findExtremeNumbers(String line, int row)
    {
        if (line.length() > theGreatestNumber.length())
        {
            theGreatestNumber = line;
            rowOfTheGreatestNumber = row;
        }
        else if (line.length() == theGreatestNumber.length())
        {
            if (line.compareTo(theGreatestNumber) == 1)
            {
                theGreatestNumber = line;
                rowOfTheGreatestNumber = row;
            }
        }

        if (line.length() < theSmallestNumber.length())
        {
            theSmallestNumber = line;
            rowOfTheSmallestNumber = row;
        }
        else if (line.length() == theSmallestNumber.length())
        {
            if (line.compareTo(theSmallestNumber) == -1)
            {
                theSmallestNumber = line;
                rowOfTheSmallestNumber = row;
            }
        }
    }
}