Guess game

This is a (very simple) guessing game written in Java. The point was to understand the HTTP protocol better.

Questions

• What is the difference between GET and POST?

  • GET requests data from a specified source. Variables are sent through the URL and therefore sensitive data should not be sent here. It remains in browser history.

   GET /index.html?guess=67 HTTP/1.1
  

  • POST submits data to a specified source. The data is sent in the HTTP body and does not remain in browser history.

   POST /index.html HTTP/1.1
   Host: w3schools.com
   guess=67
  

• What is REST?

  • REST (REpresentational State Transfer) is a software architectural style and a convention for handling resources. It typically uses HTTP. Every resource should be uniquely addressable and follow a standard. For example, if you have an articles resource:

   /Article                         GET       Gets a list with all articles
   /Article                         POST      Creates a new article
   /Article/{Article}               GET       Returns a specific article
   /Article/{Article}               PUT       Updates an article
   /Article/{Article}               DELETE    Removes an article
  

• What are the other HTTP request methods that are used in REST?

  • GET, POST, PUT and DELETE.