Write a Servlet to display “Plain Text” on browser.

//Import the required header file

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

//make one class which is extends from HttpServlet
public class hello extends HttpServlet
{

//make one method or function which have two arguments

//first argument from HttpServletRequest for request headers

//second argument from HttpServletResponse for response headers
    public void doGet(HttpServletRequest req, HttpServletResponse res)throws IOException, ServletException
    {
 

//make object of PrintWriter

//PrintWriter is a built-in variable

        PrintWriter p=res.getWriter();
        p.println("hello world");
    }
}

 //make entry of class file name and program name in web.xml

//like

*/<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
    <servlet>
        <servlet-name>hello</servlet-name>
        <servlet-class>hello</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>hello</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>

</web-app>   

 /*

//Output