import java.io.IOException;
import java.io.FileOutputStream;
import java.io.FileInputStream;
public class ByteIO{


public static void main(String [] args)
    throws IOException{
    byte outbyte=42;
    FileOutputStream out=
        new FileOutputStream("example.dat");
    out.write(outbyte);
    out.close();

    FileInputStream in=
        new FileInputStream("example.dat");
    System.out.println(in.read());
}
}
//