javaxmljavafxscenebuilder

What's the difference between fx:id and id in JavaFX?

I'm learning JavaFX in an FXML application using the Scene Builder, by reading the tutorial at oracle.com.

Once I applied some changes, an issue with these two IDs came up. I might have missed or confused something about them.

Can anyone tell me in which cases to use fx:id and when to use id?

Solution

  • id you use to set a CSS ID to your Component, for example <Text id="welcome-text" .../> and in your stylesheet you have something like #welcome-text { font-size: 16pt; } so this will be applied to your Text.

    fx:id you use if you want to work with your Components in your Controller class, where you annotate them with @FXML Text myWelcomeText.