Troubleshoot by problem

ServletSample.java

// ServletSample.java
    // Step 1: Add the necessary import statements.

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


     // Step 2: Extend HttpServlet.

public class ServletSample extends HttpServlet
{

    // Step 3: Specify the required methods.

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

    // Step 4: Get the HTTP request information, if any.

    Enumeration keys;
    String key;
    String myName = "";
    keys = request.getParameterNames();
    while (keys.hasMoreElements())
    {
        key = (String) keys.nextElement();
        if (key.equalsIgnoreCase("myName")) myName = request.getParameter(key);	
    }
    System.out.println("Name = ");
    if (myName == "") myName = "Hello";


    // Step 5: Create the HTTP response.

    response.setContentType("text/html"); 
    response.setHeader("Pragma", "No-cache");
    response.setDateHeader("Expires", 0);
    response.setHeader("Cache-Control", "no-cache");
	 
    PrintWriter out = response.getWriter(); 
    out.println("<html>"); 	
    out.println("<head><title>Just a basic servlet</title></head>");
    out.println("<body>");
    out.println("<h1>Just a basic servlet</h1>");
    out.println ("<p>" + myName +  ", this is a very basic servlet.");
    out.println("</body></html>");    
    out.flush();    
  }
}