Java filechooser?

If your intent is to make sure the user has selected a file rather than a directory (hinted at by your responses to other answers), you can use FileChooser. SetFileSelectionMode(JFileChooser. FILES_ONLY) .

However, that is the default setting when you instantiate the file chooser, so unless your code changes that at some point, you shouldn't need to set it explicitly.

If you want to ensure that the file name entered is valid before closing the file chooser then you should be able to do something like this.

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