Servlet return server time

timeServlet.java

package net.pupt.whois.panel.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import com.google.gson.JsonObject;

/**
 * Servlet implementation class timeServlet
 */
@WebServlet("/time")
public class timeServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	@Override
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		System.out.println("[info]timeServle was called.");
		String format = request.getParameter("format");
		if (format == null)
			format = "Y-M-d HH:mm:ss";
		PrintWriter pWriter = response.getWriter();
		Date date = new Date();
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
		JsonObject jsonObject = new JsonObject();
		jsonObject.addProperty("timezone", simpleDateFormat.getTimeZone().getID());
		jsonObject.addProperty("time", simpleDateFormat.format(date));
		pWriter.append(jsonObject.toString());
		pWriter.flush();
	}
}