import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;

public class CreateFile {
    public static void main(String[] args) throws IOException {
        String os = System.getProperty("os.name");
        if (os.contains("Windows")) {
            Path path = Paths.get("tape.file");
            Files.write(path, Collections.singletonList("Hello World!"));
        } else {
            Path path = Paths.get("/dev/tape");
            Files.write(path, Collections.singletonList("Hello World!"));
        }
    }
}