Вроде правильно а последний пункт не проходит .

package com.javarush.task.task19.task1916; import java.io.BufferedReader; import java.io.FileReader; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; /* Отслеживаем изменения */ //C:\Users\Stas\Desktop\222.txt public class Solution { public static List<LineItem> lines = new ArrayList<LineItem>(); public static void main(String[] args) throws Exception { ArrayList<String> gap = new ArrayList<>(); ArrayList<String> gap2 = new ArrayList<>(); BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String file1 = reader.readLine(); String file2 = reader.readLine(); reader.close(); FileReader reader1 = new FileReader(file1); FileReader reader2 = new FileReader(file2); BufferedReader buffreader = new BufferedReader(reader1); BufferedReader buffreader2 = new BufferedReader(reader2); String from1; String from2; while ((from1 = buffreader.readLine()) != null) { gap.add(from1); } while((from2= buffreader2.readLine()) != null){ gap2.add(from2); } int l1 = Math.max(gap.size(),gap2.size()); for (int i = 0; i< l1;i++){ try { String item = gap.get(i); String item2 = gap2.get(i); if (item.equals(item2)){ lines.add(new LineItem(Type.SAME,item)); }else if (!item.equals(item2) && item2.length() == 0 ){ lines.add(new LineItem(Type.REMOVED, item)); }else if (!item.equals(item2) && item.length() == 0 ){ lines.add(new LineItem(Type.ADDED,item2)); } } catch (Exception e) { if (gap.size() > gap2.size()){ lines.add(new LineItem(Type.ADDED,gap.get(i))); }else lines.add(new LineItem(Type.ADDED,gap2.get(i))); } } lines.forEach(el-> System.out.println(el.line + el.type)); buffreader.close(); buffreader2.close(); reader1.close(); reader2.close(); } public static enum Type { ADDED, //добавлена новая строка REMOVED, //удалена строка SAME //без изменений } public static class LineItem { public Type type; public String line; public LineItem(Type type, String line) { this.type = type; this.line = line; } } }