Source Code : Set the context parameters in web.xml

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Set the context parameters in web.xml

// web.xml
/*
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" 
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
  <context-param>
    <param-name>name</param-name>
    <param-value>Joe</param-value>
  </context-param>
  <context-param>
    <param-name>password</param-name>
    <param-value>password</param-value>
  </context-param>

  <servlet>
    <servlet-name>ParameterServlet</servlet-name>
    <servlet-class>ParameterServlet</servlet-class>
    <init-param>
      <param-name>name</param-name>
      <param-value>Joe</param-value>
    </init-param>
    <init-param>
      <param-name>password</param-name>
      <param-value>password</param-value>
    </init-param>
  </servlet>
</web-app>
*/

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ParameterServlet extends HttpServlet {
  private String dbName = "";

  private String dbPassword = "";

  public void init(ServletConfig config) throws ServletException {
    super.init(config);
    ServletContext context = getServletContext();
    dbName = context.getInitParameter("name");
    dbPassword = context.getInitParameter("password");

  }

  public void doGet(HttpServletRequest req, HttpServletResponse res)
      throws IOException {
    ServletOutputStream out = res.getOutputStream();
    res.setContentType("text/html");
    out.println("<html><head><title>Basic Servlet</title></head>");
    out.println("<body>Database username is  <b>" + dbName);
    out.println("</b><br>Database password is  <b>" + dbPassword + "</b>");
    out.println("</body></html>");
  }
}

Thank with us