Jtextfield Validation

[nimishalex]

Hi all

In my Swing application i am using Jtextfields.If Jtextfield have empty string("") i need to set it to 0 always .Is there any easy way to set this without if else comparison.

Thanks

Nimish

[mine0926]

I would suggest,

textField.setText("0");

Why you dont want to use if else condition? Can you use other conditional statement?

If you want to set text to JTextfields that has empty string then you will need to use conditional statement.

[DarrylBurke]

Have you thought about what you would want to happen when the JTextField (NOT Jtextfield) displays 0 and the user types a character?

To answer your question, use an appropriately coded DocumentFilter. Override remove(...) and replace(...) to call the super implementation, check whether the JTextField's text isEmpty() and conditionally call insert(...) to insert "0"

db

[nimishalex]

Thanks to all for the quick reply

I am newbie in Java Programming. Its fine to use conditional Statement. I thought some other way to implement this without the conditional statement.

[DarrylBurke]

Cross posted
Jtextfield Validation - Java Programming Forums

db