Работает, валидатор ругается.
package com.javarush.task.task19.task1916;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Отслеживаем изменения
*/
public class Solution {
public static List<LineItem> lines = new ArrayList<LineItem>();
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String file_1 = reader.readLine();
String file_2 = reader.readLine();
reader.close();
BufferedReader reader1 = new BufferedReader(new FileReader(file_1));
BufferedReader reader2 = new BufferedReader(new FileReader(file_2));
ArrayList<String> f1 = new ArrayList<>();
ArrayList<String> f2 = new ArrayList<>();
while (reader1.ready()){
f1.add(reader1.readLine());
}
while (reader2.ready()){
f2.add(reader2.readLine());
}
reader1.close();
reader2.close();
for (String s : f1) {
if (f2.contains(s)) {
lines.add(new LineItem(Type.SAME, s));
}
}
for (String s : f2) {
if (!f1.contains(s)) {
lines.add(new LineItem(Type.ADDED, s));
}
}
for (String s : f1){
if (!f2.contains(s)){
lines.add(new LineItem(Type.REMOVED, s));
}
}
}
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;
}
}
}