File not found error

I'm brand new to servlets. I have a homepage, index.html and am trying to link to a servlet and I keep getting:

Error. The file was not found. (servlet name = java146.project2.First146Servlet)

package java146.project2;
 
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
 
/**
 *  This is a servlet that displays a name and class, and a link to an image.
 *
 *@author     CEStanley
 *@created    February 10, 2005
 */
public class First146Servlet extends HttpServlet {
    /**
     *  Initializes the servlet. The init method is invoked once, automatically,
     *  each time the servlet is loaded. It is guaranteed to finish before any
     *  service requests are accepted.
     *
     *@exception  ServletException  Description of Exception
     */
    public void init()
             throws ServletException { }

/**
     *  Destroys the servlet, cleaning up whatever resources are being held.
     *  This method is invoked, once, automatically, each time the servlet is
     *  unloaded.
     */
    public void destroy() { }

/**
     *  Handles HTTP GET requests.
     *
     *@param  req                   the HttpServletRequest object
     *@param  res                   the HttpServletResponse object
     *@exception  ServletException  if there is a Servlet failure
     *@exception  IOException       if there is an IO failure
     */
    public void doGet(HttpServletRequest req, HttpServletResponse res)
             throws ServletException, IOException {
        res.setContentType("text/html");
        // set the response type before sending data
        PrintWriter out = res.getWriter();
        out.print("<HTML>");
        out.print("<HEAD><TITLE>My First Servlet</TITLE></HEAD>");
        out.print("<BODY>");
 
        // TO DO: your HTML generation code goes here, for example
        out.print("<h1>Cary Stanley</h1>");
        out.print("<h1>Advnaced Java</h1>");
        out.print("<br /><a HREF=\"/public_html.images.bodypassing.jpg\">My Image</a>");
        out.print("<br /><a href=\"/\">Home</a>");
        out.print("</BODY>");
        out.print("</HTML>");
        out.close();
    }

/**
     *  Handles HTTP POST requests.
     *
     *@param  req                   the HttpServletRequest object
     *@param  res                   the HttpServletResponse object
     *@exception  ServletException  if there is a Servlet failure
     *@exception  IOException       if there is an IO failure
     */
    public void doPost(HttpServletRequest req, HttpServletResponse res)
             throws ServletException, IOException {
 
        /*
         *  Just call the doGet method so we can handle both POSTs and GETs
         */
        doGet(req, res);
    }
}

What app server are you using?

ServletExec

Hmm, I'm not familiar with that server but I know that in Tomcat, the invokerServlet is no longer active by default.

This means that you can no longer call servlets the way you are calling them
<p align=center><A HREF="/servlet/java146.project2.First146Servlet">Project2 Servlet</A></p>

You now need to map each servlet explitly in your web.xml file. Because this addresses a security issue, I wouldn't be surprized if ServletExec did the same thing.

Search the documentation for 'servlet-mapping'.

BTW: if you want some examples of mapped servlets you can get some at:
http://simple.souther.us
These are all packaged as war files so you should be able to deploy them pretty quickly to check the mapping issue.