Getting error while servlet program HTTP Status 404 - eclipse

Question

I am new to Servlets. Anyhow, My Server runs just fine, I can access my index.html and everything is working but when I try to run my servlet on the server it gives me 404 error
I tried tp restart server, edit the web.xml file but no luck, there's also some older questions on SO for the same question, but all different from my case. Tried urlPatters{"/SimpleServlet"} also no luck..
Running on a Linux machine with Eclipse Luna and tomcat7.
Here's my servlet
package com.bgt.zaa;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class SimpleServlet
*/
#WebServlet("/SimpleServlet")
public class SimpleServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("Hello World");
}
}
and here's my xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>SinmpleServletProject</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
The error:

Answer 1

Seems a typo mistake in your URL.
try this
127.0.0.1:8080/SimpleServletProject/SimpleServlet
instead of
127.0.0.1:8080/SinmpleServletProject/SimpleServlet
your 404 URL has SinmPleServletProject. An extra n, I guess.
HTTP 404 means, requested resource is not found. So most probably the Servlet is not started properly (or) the project context root is different.