Thread: close popup message to call backend program in Spring project

how can i perform the following effect in java spring maven project. front end is using jsp. (how to prepare ajax to call backend to save value into database when click close button on popup window)

first, user go to login page to input ID and password and click the LOGIN button to home page (home.jsp)
in the home.jsp page, it will prompt a pop up message (dim background) with close button on that message. once the user click the close button on popup message. it can browse the home page.

but i will bother the user it will prompt a popup message on every login. how can i prepare a checkbox on the popup message "not to show again" checkbox for the user profile. when the user "Tick" the checkbox and click close button, how can i set the value for that user profile?

can i use json to check backend program to save into database when user click checkbox and close button on popup message ?
any example? any code for reference?