Demonstrate doGet() and doPost() Methods in a Servlet in Java

The following example code shows a program to Demonstrate doGet() and doPost() Methods in a Servlet in Java.

Here is an example of a dynamic web application using servlets to demonstrate the doGet() and doPost() methods.

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

public class RequestMethodServlet extends HttpServlet {

  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    out.println("<html>");
    out.println("<head>");
    out.println("<title>Request Method Information</title>");
    out.println("</head>");
    out.println("<body>");
    out.println("<h1>Request Method Information</h1>");
    out.println("<p>Request Method: GET</p>");
    out.println("</body>");
    out.println("</html>");
  }

  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    out.println("<html>");
    out.println("<head>");
    out.println("<title>Request Method Information</title>");
    out.println("</head>");
    out.println("<body>");
    out.println("<h1>Request Method Information</h1>");
    out.println("<p>Request Method: POST</p>");
    out.println("</body>");
    out.println("</html>");
  }
}

In this example, the RequestMethodServlet class handles both GET and POST requests. The doGet method handles GET requests and displays a message indicating that the request method is GET. The doPost method handles POST requests and displays a message indicating that the request method is POST. Both methods generate an HTML response that is sent to the client.

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