I have done a lot of Ajax and asynchronous requests to PHP files that usually return some information in JSON format. Now I hope this is the right place to ask this, because I really want to know if the approach is the same when the server language is Java. For some reason I don't feel confident enough when the server language is not PHP. So anyone who has programmed in Java please help me with this. When the file on the server that handles the request ends with .jsp instead of .php does anything change for the front end developer?