Need HELP! Opening a PDF file from different URL

Question

I have a application that links to viewpdf.class. This class file will go to the FTP where the pdf file is located and open it. How do i do this using java? Here is what I have.. .i'm stuck
URL url = new URL("ftp://user01:[email protected]/"+ folder_name +"README.pdf;type=i");
URLConnection urlc = url.openConnection();
InputStream is = urlc.getInputStream();thanks Tony
here is how it looks like if it is on the local host.
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class viewpdf extends HttpServlet
    private ResourceBundle rb;
    public viewpdf()
        rb = ResourceBundle.getBundle("LocalStrings");
    public static void streamCopy(FileInputStream fileInputStream, ServletOutputStream servletOutputStream)
        throws IOException
        if(fileInputStream == null || servletOutputStream == null)
            return;
        byte abyte0[] = new byte[8192];
        int i;
        synchronized(fileInputStream)
            synchronized(servletOutputStream)
                while((i = fileInputStream.read(abyte0)) != -1)
                    servletOutputStream.write(abyte0, 0, i);
    public void doGet(HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException
        ServletOutputStream servletOutputStream;
        String filename;
        String output;
        FileInputStream fileInputStream;
        servletOutputStream = res.getOutputStream();
        res.setContentType("application/pdf");
        ServletContext servletcontext = getServletContext();
        filename = req.getParameter("file");
        String folder_code = req.getParameter("fold");
        try{
            filename = servletcontext.getRealPath(rb.getString("file_location")) + "/" + fold + "/" + file;
        fileInputStream = null;
        fileInputStream = new FileInputStream(file);
        streamCopy(fileInputStream, servletOutputStream);
        catch(FileNotFoundException e)
        filename = servletcontext.getRealPath(rb.getString("file_location")) + "/filenotfound.pdf";
        fileInputStream = null;
        fileInputStream = new FileInputStream(file);
        streamCopy(fileInputStream, servletOutputStream);
}

Answer 1

That servlet already is Java. And the servlet code isn't what "opens" the PDF, it's the browser that sends the request that does that. I'm assuming that when you say "open it" you mean to start up an instance of Adobe Acrobat and ask it to display the document.