5. Write a servlet program that accepts a number and name from an HTML file, compares the number with predefined numbered returns a message "you win" or "you lose" if the user's number matches the predefined number similar to a lottery.
You will have to create two files namely Lottery.html (for Input) and Lottery.java (Contains Business Logic)
Lottery.html
<!DOCTYPE html> <html> <head> <title>Lottery</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <form method="post" action="Lottery"> Enter Lottery Number from 1 - 50 : <input type="text" name="txtno"/> <input type="submit" value="Spin"/> </form> </body> </html>
Lottery.java
import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * * @author Shubham Singh (https://shubhamsingh.dev/) */
@WebServlet(urlPatterns = {"/Lottery"}) public class Lottery 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("<html>"); out.println("<body>"); int no = Integer.parseInt(request.getParameter("txtno")); if(no==16) out.println("<h1> You Win </h1>"); else out.println("<h1> You Lose </h1>"); out.println("</body>"); out.println("</html>"); } } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } @Override public String getServletInfo() { return "Short description"; } }
Output
Fig 1. Lottery.html Output
Fig 2. Lottery.java Output
Hello, my name is Shubham Singh. I'm a part-time blogger, Android Developer, Web Developer, and hooked into helping the community through my various blogpost.
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