Regex

[xanawa]

Hi,
I am trying to use regex to validate an input from JOptionpane i want to allow the user entering ONLY digits, letters and exclametion marks.

This is my line of code where i would like to put teh regex.

Code

String message = JOptionPane.showInputDialog(null, "Enter a Message: ");
Steganography.hide(message, imageChoosed);
lblPictureChoosed.setIcon(new ImageIcon(imageChoosed));

I would like to put the validation on String message.

[mKorbel]

"\\d"

correct way: create JDialog put there JFormattedTextField with NumberFormatter

[thekashyap]

Is your question how to use the regEx or where to do the validation?

[xanawa]

Is your question how to use the regEx or where to do the validation?

Actually i figuerd out that i have to do a class that is the request to check the string from the jOptionPane.. What should i do pls