Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial


IntelliJ Cannot resolve symbol 'CourseIdea'?

Hi all,

I am new to Java web development and IntelliJ so bear with me. I am following the course and everything is fine until the point when I am creating this line of code:

public interface CourseIdeaDAO {
    boolean add(CourseIdea idea);

CourseIdea turns to red and I get: Cannot resolve symbol. I've tried to: Invalidate Caches/ restart but it doesn't help. Any help would be much appreciated, thank you.

Happy coding!


1 Answer

Simon Coates
Simon Coates
28,694 Points

It doesn't recognise CourseIdea as a type. Have you created a class with this name? If so, you might need an import statement.

Thanks a million Simon!

Hate to admit this, but yes, it was typo...

Feeling very stupid is part of the game, I guess :)