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Java servlet

Create a multiplication table using a servlet The first request to the page should get this response: # 2|13||4 123 4 The sec

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Answer #1

Note:-  In place of com.june19 write your package name.

package com.june19;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.Servlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/table")
public class Table extends HttpServlet implements Servlet {
static final long serialVersionUID = 1L;

public Main() {
super();

}

//Here we want to display the table.So we will write our logic in doGet method which represents the get request.

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// Response will be in text/html format.
// Other type we can send is XML,JSON etc..

response.setContentType("text/html");

// Outpr object will be used to send the reponse back to Html page from where the servlet is called.
PrintWriter outpr = response.getWriter();

String title = "Table";
outpr.println("<html>");
outpr.println("<head>");
outpr.println("<title>" + title + "</title>");
outpr.println("</head>");
  



try {

// Taking the request parameter from the http servlet request.

int number = Integer.parseInt(request.getParameter("number"));


int num = 1;

outpr.println("<body");
outpr.print("<table border=1>");

// Code for top row which holds # and 1 to 5.
outpr.print("<tr>");
outpr.print("<th>#</th>");

for (int i = 1; i <= 5; i++) {

outpr.print("<th>" + i + "</th>");
}
outpr.print("</tr>");
  
// Code from second row to number + 1 rows.
while(num<=number){
  
outpr.print("<tr>");
outpr.print("<td>" + num + "</td>");
for(int i = 1; i<=5; i++){
outpr.print("<td>" + num * i+ "</td>");

}

outpr.print("</tr>");   

}

outpr.print("</table>");
  
} catch (NumberFormatException e) {
outpr.println("<body><h1>Enter in number format only!!!! DONT ENTER TEXT !!!!</h1></body>");
}

outpr.println("</body>");
outpr.println("</html>");

}

}

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