1. Прошу подсказать, что не так?
2. Откуда берется символ в первой строке "\uFEFF" и нужно ли его удалять в с.47?
package com.javarush.task.task22.task2207;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
/*
Обращенные слова
*/
public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
List<String> listForChecking = fileBufferedReader(fileName);
List<String> checkedList = new ArrayList<>();
for (String s : listForChecking) {
StringBuilder sb = new StringBuilder(s);
String reversedString = sb.reverse().toString();
if (!checkedList.contains(s)) {
if (listForChecking.contains(reversedString)) {
checkedList.add(s);
checkedList.add(reversedString);
Pair pair = new Pair();
pair.first = s;
pair.second = reversedString;
if (!result.contains(pair)) {
result.add(pair);
}
}
}
}
for (Pair pair : result) {
System.out.printf("%s %s%n", pair.first, pair.second);
}
}
private static List<String> fileBufferedReader(String fileName) {
List<String> fileDataList = new ArrayList<>();
try {
if (!fileName.isEmpty()) {
BufferedReader fileReader = new BufferedReader(new FileReader(fileName));
while (fileReader.ready()) {
List<String> tmpList = Arrays.asList(fileReader.readLine().replace("\uFEFF", "").split(" "));
fileDataList.addAll(tmpList);
}
fileReader.close();
}
} catch (NullPointerException e1) {
System.out.println("File name is empty");
} catch (IOException e2) {
System.out.println("Can't read the file");
}
return fileDataList;
}
public static class Pair {
String first;
String second;
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Pair pair = (Pair) o;
if (first != null ? !first.equals(pair.first) : pair.first != null) return false;
return second != null ? second.equals(pair.second) : pair.second == null;
}
@Override
public int hashCode() {
int result = first != null ? first.hashCode() : 0;
result = 31 * result + (second != null ? second.hashCode() : 0);
return result;
}
@Override
public String toString() {
return first == null && second == null ? "" :
first == null ? second :
second == null ? first :
first.compareTo(second) < 0 ? first + " " + second : second + " " + first;
}
}
}