Java Swing Call Method Before Focus Change

Question

I am working with a java swing form that contains a JTextField. The text field needs input validation , validation is performed when the field losses focus . i.e clicking anyware apart from the field itself.

The form also contains a JButton to clear(cancel) the form . Now whenever I press the cancel button and the Textfield is the currently focused component the validation function is invoked. This should not happen.

I have tried InputVerifier and Focuslistener

Is there a way I can know what component caused the focus to change ?

Answer 1

This is fine but the form contains a JButton to clear(cancel) the form

You can use:

clearButton.setVerifyInputWhenFocusTarget(false);

to prevent the InputVerifier from being invoked when you click on the button.