Thank you from the mountain :)
package pl.codegym.task.task18.task1806;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
/*
Popraw błędy
*/
public class Solution {
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream("c:/data.txt");
// Utwórz strumień do zapisu bajtów do pliku
FileOutputStream outputStream = new FileOutputStream("c:/result.txt");
if (inputStream.available() >= 0) {
// Odczytaj cały plik na raz
byte[] buffer = new byte[inputStream.available()];
int count = inputStream.read(buffer);
outputStream.write(buffer, 0, count);
}
inputStream.close();
outputStream.close();
}
}