MyServlet.java

package MyPackage;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Servlet implementation class MyServlet
 */
public class MyServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
	private String[] jokes = {
    "Why do Java developers wear glasses? Because they don't C#!",
    "I told my computer I needed a break, and now it won't stop sending me Kit Kat bars.",
    "Why don't programmers like nature? It has too many bugs.",
    "How many programmers does it take to change a light bulb? None, it's a hardware problem.",
    "Why do programmers prefer dark mode? Because light attracts bugs.",
    "What's a Java developer's favorite bean? The CoffeeBean!",
    "Why was the Java developer sad? Because they didn't get a byte!",
    "Why did the programmer quit their job? Because they didn't get arrays.",
    "What do you call a programmer from Finland? Nerdic.",
    "Why did the computer go to therapy? It had a hard drive."
};

       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public MyServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		String str1 = request.getParameter("num1");
		String str2 = request.getParameter("num2");
		String str3 = request.getParameter("bt1");
		
		int a = Integer.parseInt(str1);
		int b = Integer.parseInt(str2);
		int ans;
		
		if(str3.equals("1")) ans= a+b;
		else if(str3.equals("2")) ans=a-b;
		else if(str3.equals("3")) ans=a*b;
		else ans=a/b;
		
		 int randomIndex = (int) (Math.random() * jokes.length);
	     String randomJoke = jokes[randomIndex];
	     
		response.sendRedirect("result.jsp?ans="+ans+"&joke="+randomJoke);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}