Cossa do awt com oracle e outputstream

create or replace and compile java source named testa_grafico as

import java.io.*;
import java.awt.*;
import java.awt.image.*;


public class graf
{
   public static void teste() throws IOException{
	    OutputStream out=null;
			
	    int width=200, height=200;
      BufferedImage buffer = new BufferedImage( width, height, BufferedImage.TYPE_INT_RGB );
      Graphics g = buffer.createGraphics();
			
			g.setColor( Color.WHITE );
      g.fillRect( 0, 0, width, height );
			
			g.setColor( Color.BLACK );
      g.drawLine(0,0,width,height);
			

			out.write(g); <<< isso não funciona.. o que eu faço pra colocar o g no meu outputStream???
			
			out.flush();
			out.close();
	 }