Only integer input in java GUI

Question

I'm creating a form in Java.I want from user to only input integer value can anyone help?

Answer 1

It would be better if you go through the course once before asking this question. But anyways this should help.

https://www.sololearn.com/learn/Java/2220/

Answer 2

Which GUI library are you using? Swing? Fx?
https://dzone.com/articles/validation-javafx