Наверняка я далёк от правильного решения, буду рад любой подсказке
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 {
String firstFileName;
String secondFileName;
try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
firstFileName = reader.readLine();
secondFileName = reader.readLine();
}
List<String> firstFileLines = new ArrayList<>();
List<String> secondFileLines= new ArrayList<>();
try(BufferedReader firstReader = new BufferedReader(new FileReader(firstFileName));
BufferedReader secondReader = new BufferedReader(new FileReader(secondFileName))){
while(firstReader.ready()){
firstFileLines.add(firstReader.readLine());
}
while(secondReader.ready()){
secondFileLines.add(secondReader.readLine());
}
}
for (String currentLine:firstFileLines) {
if(secondFileLines.contains(currentLine)){
lines.add(new LineItem(Type.SAME,currentLine));
}
else{
lines.add(new LineItem(Type.REMOVED,currentLine));
}
}
for (String currentLine: secondFileLines) {
if(!(firstFileLines.contains(currentLine))){
lines.add(new LineItem(Type.ADDED,currentLine));
}
}
}
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;
}
}
}