As it says on the tin: When the program is opened, the Import Data function will be triggered so as to allow for easy importing of data files first. It should close the program if a file is not opened. This means that errors or accidental / deliberate cancelling of the "Import Data" JFileChooser will cause the program to close.
It should also open a Message Box popup to say what's going on. (This can also be included under the global toggles in the Options sub-menu if desired.)
As it says on the tin: When the program is opened, the Import Data function will be triggered so as to allow for easy importing of data files first. It should close the program if a file is not opened. This means that errors or accidental / deliberate cancelling of the "Import Data" JFileChooser will cause the program to close.
It should also open a Message Box popup to say what's going on. (This can also be included under the global toggles in the Options sub-menu if desired.)