Question

How can I have one controller sharing/using another controller's method

Comments

Can you clarify how your question is different from this question that has already been answered? http://lovelace.augustana.edu/q2a/index.php/203/passing-data-from-one-gui-controller-another-gui-controller

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I tried creating an object of the controller class and calling the method in question on that object but it didn't work. So I wondered if there was another way that didn't involve creating a root and loader... and the rest.

Answer 1

You need to make a controller of the next window in the current window in order to use another controller. You will need to first make a FXMLLoader object. You can then declare a controller by calling the FXMLLoader object's method getController(). Once you have a controller of the next window you can call the methods from of the controller while still being in the current window.