The output is wrong but for me it seems to be good :(
package pl.codegym.task.task19.task1906;
/*
Znaki parzyste
*/
import java.io.FileReader;
import java.io.FileWriter;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStreamReader;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String nazwa1 = reader.readLine();
String nazwa2 = reader.readLine();
reader.close();
FileReader readerv = new FileReader(nazwa1);
FileWriter writer = new FileWriter(nazwa2);
int i = 1;
while(readerv.ready()){
if(i%2==0){
int data = readerv.read();
writer.write(data);
}
i++;
}
readerv.close();
writer.close();
}
}