Pls help me on how to compile servlet

pls i need the help of some kind one to assist me on how to compile and deploy servlet .I'm new to javaEE & am using the javaEE tutorial from sun site.In the first example servlet in d book, after compiling and deploying the greetingServlet and responseServlet and deployed it ,i was told to include a welcome jsp file in d war file. all these i have done but the server always complain of not been able locate d greetingServlet.
i use the netbeans IDE and sun java application server.The greetingServlet & responseServlet codes are these; Pls I don't know what to put in the jsp file
package servlets;
import java.io.*;
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
* This is a simple example of an HTTP Servlet. It responds to the GET
* method of the HTTP protocol.
public class GreetingServlet extends HttpServlet {
    public void doGet(
        HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        response.setBufferSize(8192);
        PrintWriter out = response.getWriter();
        // then write the data of the response
        out.println("<html>" + "<head><title>Hello</title></head>");
        // then write the data of the response
        out.println(
                "<body bgcolor=\"#ffffff\">"
                + "<img src=\"duke.waving.gif\" alt=\"Duke waving\">"
                + "<h2>Hello, my name is Duke. What's yours?</h2>"
                + "<form method=\"get\">"
                + "<input type=\"text\" name=\"username\" size=\"25\">"
                + "<p></p>" + "<input type=\"submit\" value=\"Submit\">"
                + "<input type=\"reset\" value=\"Reset\">" + "</form>");
        String username = request.getParameter("username");
        if ((username != null) && (username.length() > 0)) {
            RequestDispatcher dispatcher = getServletContext()
                                               .getRequestDispatcher(
                        "/response");
            if (dispatcher != null) {
                dispatcher.include(request, response);
        out.println("</body></html>");
        out.close();
    public String getServletInfo() {
        return "The Hello servlet says hello.";
package servlets;
import java.io.*;
import java.util.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
* This is a simple example of an HTTP Servlet. It responds to the GET
* method of the HTTP protocol.
public class ResponseServlet extends HttpServlet {
    public void doGet(
        HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
        PrintWriter out = response.getWriter();
        // then write the data of the response
        String username = request.getParameter("username");
        if ((username != null) && (username.length() > 0)) {
            out.println("<h2>Hello, " + username + "!</h2>");
    public String getServletInfo() {
        return "The Response servlet says hello.";
}

Here is what you will need to do.
1. Compile the servlets by performing the following steps
1.1 Open a command line in the directory where your servlets are located.
1.2 Type the following commands
1.2.1 javac GreetingServlet.java
1.2.2 javac ResponseServlet.java
Then you should see the .class files for these classes appear in the directory .
Next you will put these class files in the WEB-INF/classes directory.
Once you have done that you will edit your web.xml in the WEB-INF directory to include the two servlets. That code will look something like this
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
     <servlet>
          <servlet-name>GreetingServlet</servlet-name>
          <servlet-class>GreetingServlet</servlet-class>
     </servlet>
     <servlet-mapping>
          <servlet-name>GreetingServlet</servlet-name>
          <url-pattern>/GreetingServlet</url-pattern>
     </servlet-mapping>
     <servlet>
          <servlet-name>ResponseServlet</servlet-name>
          <servlet-class>ResponseServlet</servlet-class>
     </servlet>
     <servlet-mapping>
          <servlet-name>ResponseServlet</servlet-name>
          <url-pattern>/ResponseServlet</url-pattern>
     </servlet-mapping>
</web-app>Once you have done this save the web.xml file and recompile the war file by following these steps
1 open a commandline in the root directory where the servlets are
2 type the following command jar -cvf warFileName.war .
*Note the space and period at the end of the command are not a mistake the space . tells the jar tool to complie the war from the directory you are current in.
Once this command is successfully ran you should see a .war file appear in the directory you are in. Then simply put the war file in your deploy directory of your server and you are finished.
alternatly if you are just doing this for yourself to learn servlets and this is not going to be deployed anywhere then I would just use the W3C's Jigsaw server which does all the work for you all you have to do is compile the servlets and put the class files in the servlets directory and you are done.

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