Salve a tutti! ^^ Allora, quando tento di avviare un servlet che ho creato, mi appare questo errore: "HTTP Status 405 - HTTP method GET is not supported by this URL"
Non riesco a capire cosa centri questo metodo GET e perchè fa così... sotto c'è il codice, spero qualcuno mi aiuti

codice:
import java.sql.SQLException;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class topics extends HttpServlet
{
	private Connection connection;
	private Statement statement;
	
	public void init (ServletConfig config) throws ServletException
	{
		try
		{
			Class.forName (config.getInitParameter ("databaseDriver"));
			
			connection = DriverManager.getConnection (config.getInitParameter ("databaseName"), config.getInitParameter ("user"), config.getInitParameter ("pass"));
			statement = connection.createStatement();
		}
		catch (Exception exception)
		{
			exception.printStackTrace();
		}
	}
	
	protected void doPost (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
	{
		response.setContentType ("text/html");
		PrintWriter out = response.getWriter();
		
		out.println ("<html><head>");

		try
		{
			ResultSet resultSet = statement.executeQuery ("SELECT * FROM topics ORDER BY topicID");
			
			out.println ("<title>Scegli il topic</title></head><body>");
			
			while (resultSet.next())
			{
				int topicID = resultSet.getInt (1);
				String topicName = resultSet.getString (2);
				
				out.println ("

" + topicID + " - <a href = \"faq?arg=" + topicID + "&nm=" + topicName + "\">" + topicName + "</a></p>");
			}
			
			out.print ("</body></html>");
			out.close();
		}
		catch (SQLException exception)
		{
			exception.printStackTrace();
			out.println ("<title>Errore</title><body>Si è verificato un errore col database</body></html>");
			out.close();
		}
	}
}