показалась не сложная задача ,но что не так ?
package com.javarush.task.task17.task1721;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Транзакционность
*/
public class Solution {
public static List<String> allLines = new ArrayList<String>();
public static List<String> forRemoveLines = new ArrayList<String>();
public static void main(String[] args) {
Solution s = new Solution();
try {
s.joinData();
} catch (CorruptedDataException e) {
e.printStackTrace();
}
}
public void joinData() throws CorruptedDataException {
try {
BufferedReader sread = new BufferedReader(new InputStreamReader(System.in));
String name1 = sread.readLine();
String name2 = sread.readLine();
sread.close();
FileReader fr1 = new FileReader(name1);
BufferedReader reader1 = new BufferedReader(fr1);
String line1;
while ((line1 = reader1.readLine())!=null) {
allLines.add(line1);
line1 = reader1.readLine();}
fr1.close();
reader1.close();
FileReader fr2 = new FileReader(name2);
BufferedReader reader2 = new BufferedReader(fr2);
String line2 ;
while ((line2= reader2.readLine()) != null) {
forRemoveLines.add(line2);
line2 = reader2.readLine();}
fr2.close();
reader2.close();
}catch (IOException e) {
e.printStackTrace();
}
if(allLines.containsAll(forRemoveLines)) {
allLines.removeAll(forRemoveLines);
}
else {allLines.clear();
throw new CorruptedDataException();}
}
}