Написала небольшой код для копирования файлов:
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String src = scanner.nextLine();
String dst = scanner.nextLine();
scanner.close();
try(FileInputStream in = new FileInputStream(src);
FileOutputStream out = new FileOutputStream(dst)) {
int temp;
while ((temp = in.read()) > -1) {
out.write(temp);
}
System.out.println("done");
} catch (IOException e) {
e.printStackTrace();
}
}
}