Data Entry Validation, Dont Know How To Do It.

807569

I would like some code which specifies which data is allowed to be entered into a textbox. For example i only want 11 integers to be allowed for ISBN. Ive done the int bit which is easy but how do i state that it can only hold 11ints?

Thanks very much, Antony (UK)...

PhHein

JFormattedTextfield and/or your custom TextDocument.

807569

Sorry, im an Ameteur, i dont know what you mean!

PhHein

Ok, this might be a start:
http://forum.java.sun.com/thread.jspa?forumID=257&threadID=534272

Many more here:
Click here for examples

807569

JFormattedTextField comp = new JFormattedTextField(new MaskFormatter("***************"));

This looks relitively easy, however where it says "comp", what is this?
Is theis the variable i get from the textbox? So i would use "isbn"?

Where does this state which textbox this applies to?

Thanks, Antony...

PhHein

Oook. After that question you get a new link:
Try this