Java OutputStream.write(int b)

public abstract void write(int b)   throws IOException

/*from  ww w.jav  a  2 s  .c o m*/

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {

  public static void main(String[] args) {
    try {

      OutputStream os = new FileOutputStream("test.txt");

      InputStream is = new FileInputStream("test.txt");

      os.write(70);
      os.write(71);

      for (int i = 0; i < 2; i++) {
        System.out.print((char) is.read());
      }
      os.close();
      is.close();
      
    } catch (Exception ex) {
      ex.printStackTrace();
    }

  }
}