I am simply trying to access my image file (which is in the project folder) by using "cards//1.png". It works fine on the File class: the file.exists() method returns true. However, when I plug it into the Image object constructor, I get an error Invalid URL or resource not found. Is there a way to use the file in the constructor instead of the filePath?

kknaur wrote:

I explained this during the lecture.  Files for File I/O and the File class are relative to the project folder.  Files for resources for JavaFX such as images, sounds, video clips, etc are relative to the src folder.

It should still work if I give an absolute file path too right? I tried using an absolute path just to test it and it still wouldn't load.

At that point I would have to see what your setup is.  "file: " might work, but maybe only for your computer? I have never used this so I can't say for sure if it will work on all systems.