So I created a database in Oracle SQL Developer and wrote up all the table definitions by hand using Notepad ++ and just did a bulk create tables statement.
Silly me forgot to save this file so now I have all the definitions on SQL developer but none locally.

I have made some major changes to the design however there are some definitions that I can still use that are on there.

Is there a way I can export all the tables in a database to a file? I know I can grab the definitions individually however the time constraint would be massive. This way I don't have to go about manually writing it all again. Any searches that I conduct looking for an answer are just giving answers on how to select all tables in a database and not how to export table definitions.

Just to note, I had a look in my temp data for Notepad ++ however the file is not there anymore.