Joptionpane showinputdialog return center


JOptionPane.showInputDialog() will return the string the user has entered if showinputdizlog user hits ok, and returns null otherwise. Therefore, you can just check to see shoiwnputdialog the resultant string is null. The javadocs on the method here are not terribly explicit about this, but where jotionpane return behavior teturn mentioned, it is indicated to be so. Most Dialogs present an error message or warning to a user, but Dialogs can joptionpane showinputdialog return center images, directory trees, or just about anything compatible with the main Swing Application that manages them.For convenience, several Swing component classes can directly instantiate and display dialogs.

To create simple, standard dialogs, you use theJOptionPane class. The ProgressMonitor class can put up a dialog that shows the progress of an operation. Two other classes, JColorChooser and JFileChooser, also supply standard dialogs. To bring up a print dialog, you can use thePrinting API. To create a custom dialog, use theJDialog class directly.The code for simple dialogs can be minimal. For example, here is an informational dialog:Here is the code that creates and shows it.

Slight alteration required. If you are using a non-GUI application it is probably easiest to pass null joptionpane showinputdialog return center the first argument.




Joptionpane showinputdialog return center

Joptionpane showinputdialog return center