File Viewer - How to associate file with application?

Under the "Files" tab, I double-click a .doc or .xls file, but instead of opening Word or Excel, SQL Developer opens up a window and displays a lot of gibberish (as though the file is being opened up with the SQL Worksheet editor).
I can right-click the .doc/.xls and select Word or Excel in the popup which does open okay in Word/Excel, but wanted to know if there was a way of associating the .doc and .xls extensions with their respective applications, so it just works with a double-click.
Maybe there is some way to add Word, Excel, etc as a default editor (there doesn't seem to be any option to add a one).
Thanks in advance,
Stuart.

I don't think so, it's a shortcut to developing with sqldev, not a copy of the Windows Explorer. So just use the latter for opening files (I myself don't use the File tab ever).
Have fun,
K.

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