The class "HistoryFrame" is not in your classpath.
--- "Kenny G. Dubuisson, Jr." <[EMAIL PROTECTED]> wrote:
> Hello all. I'm trying to get an example servlet from a book ("Professional
> JSP") to compile. When I try to compile it, I get the following error:
>
> g2d_2_jpg.java:38 cannot resolve symbol
> symbol: class HistoryFrame
> location: class g2d_2_jpg
> HistoryFrame dummy = new HistoryFrame(root);
> ^
>
> Here is the servlet:
>
> import java.io.*;
> import javax.servlet.*;
> import javax.servlet.http.*;
>
> import java.awt.*;
> import java.awt.image.*;
>
> import org.w3c.dom.*;
> import org.apache.xerces.parsers.DOMParser;
> import org.xml.sax.InputSource;
>
> import com.sun.image.codec.jpeg.*;
>
> public class g2d_2_jpg extends HttpServlet {
>
> private static final int WIDTH = 480;
> private static final int HEIGHT = 400;
>
> protected void doGet(HttpServletRequest request,
> HttpServletResponse response)
> throws ServletException, IOException {
>
> ServletOutputStream out = response.getOutputStream();
> ServletContext context = this.getServletConfig().getServletContext();
>
> try {
> response.setContentType("image/jpeg");
>
> // read and parse the file specified by xml parameter
> InputStream xmlStream =
> context.getResourceAsStream(request.getParameter("xml"));
> DOMParser parser = new DOMParser();
> parser.parse(new InputSource(xmlStream));
>
> Document doc = parser.getDocument();
> Element root = doc.getDocumentElement();
>
> // create a proper size Frame object
> HistoryFrame dummy = new HistoryFrame(root);
> dummy.setSize(new Dimension(WIDTH, HEIGHT));
> BufferedImage image = new BufferedImage(WIDTH, HEIGHT,
> BufferedImage.TYPE_INT_RGB);
> Graphics2D g2 = image.createGraphics();
>
> // draw the graph onto the image
> dummy.paint(g2);
>
> // encode the output back to the client
> JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
> encoder.encode(image);
> out.flush();
>
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> }
>
>
> Thanks,
> Kenny
>
> ___________________________________________________________________________
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>
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>
=====
Mark Zawadzki Performance Engineer/DBA/Programmer extraordinaire’ [EMAIL PROTECTED]
[EMAIL PROTECTED]
"Democracies die behind closed doors," - Judge Damon Keith
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