Joptionpane.showinputdialog no cancel button

I am using an Input Dialog for user input. The input can be a string value, or simply pressing "OK" to use the default value.

java - Is there a way to only have the OK button in a JOptionPane showInputDialog (and no CANCEL button)? - Stack Overflow

With this, there is no way to differentiate between the user specifying the default value no string input, "OK" button press and the user canceling "Cancel" button press. Both return a null String. It looks like I can register a PropertyChangeListener on the InputDialog, but that requires apparently constructing the InputDialog directly, then adding to a JDialog, etc.

Is there some other way to differentiate between "OK" with a null value and "Cancel" without having to build the InputDialog myself and add the PropertyChangeListener? You could use "" for the initialSelectionValue parameter to differentiate between OK and Cancel:.

If the user clicked Cancel, s is null, if the user clicked OK and did not enter a value, it is "". By posting your answer, you agree to the privacy policy and terms of service. Stack Overflow Questions Developer Jobs Documentation beta Tags Users.

java - How to handle cancel button in JOptionPane - Stack Overflow

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OK cancel option dialog : JOptionPane Dialog « Swing « Java Tutorial

Stack Overflow is a community of 7. Join them; it only takes a minute: Differentiating between no input null String and Cancel button in JOptionPane. It doesn't matter if I set an initial value or not. Post your SSCCE that demonstrates the problem.

Thus, differentiating is easy as long as I don't use the offending package. Your test case did lead me to the actual problem, thanks. You could use "" for the initialSelectionValue parameter to differentiate between OK and Cancel: I get an empty string even if I don't set an initial value and just press OK. Did you use the same version of showInputDialog? I'm saying I used two versions of showInputDialog, one with an initial value and one without.

In both cases an empty string was returned.

In other words I could not duplicate the problem because I never got "null" when I click Ok. So I am questioning the problem statement of the OP. Sign up or log in StackExchange. Sign up using Facebook.

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