Question: I've spent hours and I can't understand why this is highlighted red and I don't know what my error is.

```
CREATE FUNCTION Student_Section_Count(StudentID INT)

Returns INT

Begin 

DECLARE section_Registred INT;

SET section_Registred= (Select COUNT(DISTINCT Section.ID) as 'Students Registration Count'

FROM Section
Inner Join
Registration on registration.StudentID=Section.ID

Where registration.StudentID=StudentID);

Return Section_Registred;

END$$

Delimiter;

```

It highlights END and Delimiter, as well as INT from Return INT

Answer: 
Verify your java build path of the project and check if `src` is present there.
Right click on the project and select Build Path -> Configure Build Path.If `src` is not in build path it won't show you can add src folder in your build path of the project by following below steps,

* right click on project
* select properties
* select java build path
* goto source tab
* click add folder
* select your source folder (src/main/java)

Also look at perspective is will be in Navigator perspective.
@msagala you have to `Configure build path`. Then under `Source` tab click `Add` button and you will see your existing source folder.
I hope this will help you.