import javax.servlet.*;
import javax.servlet.http.*;
import com.sun.image.codec.jpeg.*;  //kuulub SUNi JDK-sse
import java.awt.image.*;
import java.awt.*;
import java.io.*;

public class piltservlet extends HttpServlet{
  public void doGet(HttpServletRequest kysimus, HttpServletResponse vastus)
      throws IOException, ServletException{
    String tekst=kysimus.getParameter("tekst");
    if(tekst==null){tekst="Tervitus!";}
    int laius=40*tekst.length()+20;
    int korgus=100;
    BufferedImage pilt =new BufferedImage(laius, korgus,
                                              BufferedImage.TYPE_INT_RGB);
    BufferedImage pilt2 =new BufferedImage(laius, korgus,
                                              BufferedImage.TYPE_INT_RGB);

    Graphics2D  piltg=pilt.createGraphics();
    piltg.setColor(Color.white);
    piltg.fillRect(0, 0, laius, korgus);
    piltg.setPaint(new GradientPaint(0, 0, Color.yellow,
               100, 0, Color.green, true
    ));    
    piltg.setFont(new Font("Times", Font.ITALIC, 70));
    piltg.drawString(tekst, 10, 75);
    float andmed[]=new float[100];
   for(int i=0; i<100;i++)andmed[i]=0.01f;
   ConvolveOp co=new ConvolveOp(new Kernel(10, 10, andmed));
   co.filter(pilt, pilt2);   
    BufferedImage pilt3=pilt2.getSubimage(5, 5, laius-10, korgus-10); //mustad servad ära
    vastus.setContentType("image/jpeg");
    JPEGCodec.createJPEGEncoder(vastus.getOutputStream()).encode(pilt3);
  }
}