Javafx error exception in Application start method no controller specified

Question

When I run the following code in intellij with java 8 I get an error. Please Help. The fxml is generated using the scene builder, I think the button Dagrooster isn\'t linked

Answer 1

It is true you havent told the fxml file where the controller class is...

this ...

As this...

Or even this...

.. then put both files in the same folder