The error code is HTTP 404 (not found) and the description is:
The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.
This error means the server could not find the requested resource (JSP, HTML, images…) and returns HTTP status code 404. Most of the time, you can fix this error by correcting the URL. However, sometimes it’s not easy like that, making it is an annoying error.
Here I suggest some possible reasons and how to fix the error HTTP 404 in Java web development with Tomcat.