java code for Servlet JNDI and Bean

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class BeanServlet extends HttpServlet {

private StockPriceBean spbean;

public void init() throws ServletException {

Context env = null;

try {
// Compile error since there is no StockPriceBean.class
// change the name according to your requirements
env = (Context) new InitialContext().lookup("java:comp/env");
spbean = (StockPriceBean) env.lookup("bean/pricebean");

//close the InitialContext
env.close();

if (spbean == null)
throw new ServletException(
"bean/pricebean is an unknown JNDI object");

} catch (NamingException ne) {

try {
env.close();
} catch (NamingException nex) {
}

throw new ServletException(ne);

}

}

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {

//set the MIME type of the response, "text/html"
response.setContentType("text/html");

//use a PrintWriter send text data to the client who has requested the
// servlet
java.io.PrintWriter out = response.getWriter();

//Begin assembling the HTML content
out.println("");

out.println("");
out.println("

Please submit a valid stock symbol

");

//make sure method="post" so that the servlet service method
//calls doPost in the response to this form submit
out.println("

+ request.getContextPath() + "/namingbean\" >");

out.println("");
out.println("

"); out.println("Stock symbol:	"); out.println(""); out.println("
"); out.println("

");
out.println("");

out.close();
} //end doGet

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws java.io.IOException {

String symbol;//this will hold the stock symbol
float price = 0f;

symbol = request.getParameter("symbol");

boolean isValid = (symbol == null || symbol.length() < 1) ? false
: true;

//set the MIME type of the response, "text/html"
response.setContentType("text/html");

//use a PrintWriter send text data to the client who has requested the
// servlet
java.io.PrintWriter out = response.getWriter();

//Begin assembling the HTML content
out.println("");
out.println("");

if ((!isValid) || spbean == null) {

out.println("

Sorry, the stock symbol parameter was either empty or null

");

} else {

out.println("

Here is the latest value of " + symbol + "

");

spbean.setSymbol(symbol);
price = spbean.getLatestPrice();

out.println((price < 1 ? "The symbol is probably invalid." : ""
+ price));

}

out.println("");

}// doPost

}//BeanServlet