File tree is located on the left column of the main window. File tree shows a tree of subfolders and files. This is your File-system tree.
Within File tree select the directory (folder) where the files supported by this program are located. This application supports the following file types:
jpg | jpeg | png | gif | bmp | wbmp | wav | wave
If you do not see your hard disk drives (HDD) in the File Tree, click on "This PC", "Computer", "Your.User.Name", this depends on your OS File-system.
If there is no file supported by this application in the selected directory, the Table will not be filled (i.e. the middle column will be empty).
When working with the File tree keep in mind that it works using the SwingWorker class.
In simpler terms, File tree is relatively slow, so when you click on File tree wait for it to refresh. Another disadvantage is that File tree only loads the contents of a particular directory once, ie. it does not have a "live" connection to your file system. E.g. if you change the name of some files and/or directories during the operation of this application, the PRG application will not notice it. Avoid this. In this case, you must restart the PRG application.
So, fill in the table like this:
When there are 1 or more rows in the Table, this application is fully functional.