How to force a popup in java

[Ha Nguyen]

Hi all,
I have a following problem:
During Login, need to check some things, and if fail show a message in popup.
But i dont know what is command to create a popup in java?

Pls help me, Thanks in advance,

Ha

[Frinavale]

What type of project is this?

-Frinny

[jx2]

have a look here

good luck

Jan

[Ha Nguyen]

Thanks so much, Jan

Ha

[Ha Nguyen]

Hi all,
I showed the popup when login fail but after that it was displayed again if i refresh that login page.
Pls help me to not show popup when refreshing.
Thanks in advance,

Ha