/** Methods Used : Servletcontext
/** getServletContext(); context.getInitParameter();getServletInfo();
index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello Students </h1>
<form action="NewServlet1" method="post">
<br>
<h2> TODAY TOPIC is SERVLET CONTEXT </h2>
<input type="submit" value="PRESS IT ">
</form>
</body>
</html>
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web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name> parname </param-name>
<param-value> jayachandra</param-value>
</context-param>
<context-param>
<param-name> parcourse </param-name>
<param-value> computerscience </param-value>
</context-param>
<servlet>
<servlet-name>NewServlet1</servlet-name>
<servlet-class>NewServlet1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>NewServlet1</servlet-name>
<url-pattern>/NewServlet1</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
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NewServlet1.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* a\Author Jayachandra
*/
public class NewServlet1 extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servelet Commands request.getContextPath() & getServletContext() </title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>This program is stored at location " + request.getContextPath() + "</h1>");
ServletContext context=getServletContext();
String name=context.getInitParameter("parname");
String course=context.getInitParameter("parcourse");
out.println("Name of the Student : " +name);
out.println("</br>");
out.println(" Course Opted : " +course);
String x=getServletInfo();
out.println("<p>Servelet information returned with </p>"+x);
out.println("</body>");
out.println("</html>");
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "This Servlet Program is to tell about ServeltContext";
}// </editor-fold>
}
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