HTTP Status 404 - /EmpServletDemo/EmpServlet

I am getting this error while executing a Servlet program using tomcat.
This is my first java program so not sure at all why this comes. Please help
here are the details of my Java Resource

I created a Folder named EmpServletDemo under Java Resource in Eclipse IDE
And the Actual Servlet program name is EmpServlet
Following is the code

/**
 * Servlet implementation class EmpServlet
 */
public class EmpServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    private Connection Con;
    private PreparedStatement ps;
    private ResultSet rs;
   
	/**
     * @see HttpServlet#HttpServlet()
     */
    public EmpServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		try
		{
		  PrintWriter out = response.getWriter();
		  DriverManager.registerDriver(new oracle.jdbc.OracleDriver()); 
		  Con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger");
		  ps = Con.prepareStatement("Select ename from EMP where empno = request.getParameter(eno)");
		  rs = ps.executeQuery();
		  if(rs.next())
		  {
			    out.println("<h1>");
			    out.println("<th color =orange>");
			    out.println("<tr>"+"EmpName" +"</tr>");
			    out.println("<td>"+ rs.getString(1)+"</td>");
		  }
		  else
		  {
			  out.println(rs.getString(1)+"  Not found");
		  }
		  rs.close();
		  ps.close();
		  //Con.close();
		
		}
		catch(Exception e)
		{
			System.out.println(e.toString());
			
		}
	}
		public void destroy()
		{
			try{
				if(Con!=null)
				Con.close();
			}
			catch(Exception e)
			{}
		}

/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

}

and the HTML file from which I am invoking this servlet is index.html
Its saved under WebContent

The Web.xml file looks like this

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>ServletDemo</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <description></description>
    <display-name>EmpServlet</display-name>
    <servlet-name>EmpServlet</servlet-name>
    <servlet-class>EmpServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>EmpServlet</servlet-name>
    <url-pattern>/EmpServlet</url-pattern>
  </servlet-mapping>
</web-app>

Tomcat is running fine both using startup.bat and also in Eclipse. But its giving error when I am trying to execute the program
Error

HTTP Status 404 - /EmpServletDemo/EmpServlet

--------------------------------------------------------------------------------

type Status report

message /EmpServletDemo/EmpServlet

description The requested resource (/EmpServletDemo/EmpServlet) is not available.

---------------------------------------------------------------

Apache Tomcat/7.0.25

Please help.
Thank you in advance
Sirisha

You need to give the @Override annotation on the doGet and doPost method.

Thanks and Regards,
-------------------------------------------------------------------------------------
Komal Renu | krenu@infocepts.com | www.infocepts.com
-------------------------------------------------------------------------------------