Q21

Question 21

Display Good Morning , Good Afternoon or Good Evening based on the current time of the day

Created GreetServlet.java handles url patterns like "/Q21", "/Q21/greet" and "/greet" and renders the page greet.jsp every time. It also handles the post request with name given by user to append with greet message (it displays just greet message without any input or on just get request).

Browse Source Code

Code

<%--
  Created by IntelliJ IDEA.
  User: HP
  Date: 24-04-2021
  Time: 17:37
  To change this template use File 
  | Settings 
  | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" 
language="java" %>
<html>
<head>
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6" crossorigin="anonymous">

    <title>Greet w.r.t. Current Time | JSP-4</title>

</head>
<body>

<div style="text-align: center;">

    <div class="container-fluid">
        <h1> ${greetMessage} ${name} 
        (Greet w.r.t. Current Time) | JSP-4</h1>

    </div>
</div>
</div>
<form method="post" action="/Q21/greet">
    <div class="form-group">
        <div class="container-fluid mt-5 ">
            <div class="container mt-2">
                <label for="name">Enter Name</label>
            </div>
            <div class="container mt-2">
                <input type="text" 
                class="form-control w-75 p-3" 
                id="name" 
                name="name" 
                placeholder="Enter Name" 
                required>
            </div>

            <div class="container mt-3 mx-10">
                <input type="submit" 
                formmethod="post" 
                class="btn btn-primary" 
                value="Greet Me">
            </div>
        </div>
    </div>
</form>

<div class="card-footer mt-5 text-center">
    <div class="row align-items-start">
        <div class="col-6">
            <div class="container col-lg-6">
                <a class="btn btn-primary"  
                onclick="history.back(-1)" 
                role="button">Back</a>
            </div>

        </div>
        <div class="col-6">
            <div class="container col-lg-6">
                <a class="btn btn-primary" 
                href="http://localhost:8080/" 
                role="button">Home Page</a>
            </div>
        </div>
    </div>
</div>
</body>
</html>

Download greet.jsp

package com.example.ITJSP;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
import java.util.Date;

import javax.servlet.annotation.*;

@WebServlet(name = "GreetServlet", 
value = "/GreetServlet", 
urlPatterns = {"/Q21","/Q21/greet","/greet"})

public class GreetServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request,
     HttpServletResponse response) throws ServletException,
      IOException {
        Date date = 
        java.util.Calendar.getInstance().getTime();
        int hours = date.getHours();
        String greetMessage;
        if(hours>=0 && hours<=12){
            greetMessage = "Good Morning";
        } else if(hours>=12 && hours<=15){
            greetMessage = "Good Afternoon";
        } else if(hours>=16 && hours<=20){
            greetMessage = "Good Evening";
        } else if(hours>=21 && hours<=24){
            greetMessage = "Good Night";
        } else {
            greetMessage = "Good ";
        }
        request.setAttribute("greetMessage", greetMessage);

        getServletContext().getRequestDispatcher(
        "/greet.jsp").forward(request,response);

    }

    @Override
    protected void doPost(HttpServletRequest request,
     HttpServletResponse response) throws ServletException,
      IOException {

        String name = request.getParameter("name");
        Date date = 
        java.util.Calendar.getInstance().getTime();
        int hours = date.getHours();
        String greetMessage;
        if(hours>=0 && hours<=12){
            greetMessage = "Good Morning";
        } else if(hours>=12 && hours<=15){
            greetMessage = "Good Afternoon";
        } else if(hours>=16 && hours<=20){
            greetMessage = "Good Evening";
        } else if(hours>=21 && hours<=24){
            greetMessage = "Good Night";
        } else {
            greetMessage = "Good ";
        }
        request.setAttribute("greetMessage", greetMessage);
        request.setAttribute("name", name);
        getServletContext().getRequestDispatcher(
        "/greet.jsp").forward(request,response);

    }
}

Output

Try or Test The Corresponding Code Here

Note: Above Program Runs According to the Time Zone of the Cloud Machine

PreviousQ20 NextQ22

Last updated 4 years ago