Getting input from textbox
Hi I have written a standalone app;
which gets numerical input from 2 textboxes,
coverts the numbers to strings when a button is pressed.
My problem if the user leaves the space blank i want to create a warning dialog
which prompts the user to enter a number and i would also like to prevent letters from being entered.
I have looked around the net and have used a few ideas but it doesn't work and throws a null pointer exception.
[479 byte] By [
TheRidgea] at [2007-11-27 7:28:34]
# 2
> Hi I have written a standalone app;
>
> which gets numerical input from 2 textboxes,
> coverts the numbers to strings when a button is
> pressed.
> My problem if the user leaves the space blank i want
> to create a warning dialog
> which prompts the user to enter a number and i would
Take a look at JOptionPane.
> also like to prevent letters from being entered.
>
Take a look at JFormattedTextField.
>
> I have looked around the net and have used a few
> ideas but it doesn't work and throws a null pointer
> exception.
dwga at 2007-7-12 19:08:42 >
