import java.io.DataOutputStream;
import java.io.FileOutputStream;
public class Main {
public static void main(String[] args) throws Exception {
FileOutputStream fos = new FileOutputStream("C:/Bytes.txt");
DataOutputStream dos = new DataOutputStream(fos);
dos.writeBytes("this is a test");
int bytesWritten = dos.size();
System.out.println("Total " + bytesWritten + " bytes are written to stream.");
dos.close();
}
}