import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class writebin {

  public static void main(String[] argv) throws IOException {
    int i = 42;

    String FILENAME = "binary.dat";
    DataOutputStream os = new DataOutputStream(new FileOutputStream(FILENAME));
    os.writeInt(i);
    os.close();
 //   System.out.println("Wrote " + i + " to file " + FILENAME);

    DataInputStream di = new DataInputStream(new FileInputStream (FILENAME));
    System.out.println(di.available());
    while (di.available() != 0) {

        System.out.println(di.read());
    }

    di.close();
  }
}