Java попробуйте с несколькими ресурсами
import java.io.*;
import java.util.*;
class Main {
public static void main(String[] args) throws IOException{
try (Scanner scanner = new Scanner(new File("testRead.txt"));
PrintWriter writer = new PrintWriter(new File("testWrite.txt"))) {
while (scanner.hasNext()) {
writer.print(scanner.nextLine());
}
}
}
}
SAMER SAEID