Is there a way to programmatically access the title of a TitledPane in JavaFX without using CSS?

Is there a way to set the title of a TitledPane to bold in Java code without using CSS?

I created a TitledPane and I want the title's font weight to be bold.

This is what I tried:

TitledPane Rootpane = new TitledPane();
Rootpane.setText("Options");
Rootpane.setStyle("-fx-background-color: #eeeeee; -fx-text-fill: #1b75bc; -fx-font-weight: bold;");

The title became bold, but unfortunately, all the other buttons within the TitledPane also became bold...

I just want to make the Title bold without using a CSS file.

Is there a way to select the title in Java Code?

I attempted this:

Rootpane.lookup(".titled-pane > .title").setStyle("-fx-font-weight: bold;");

However, I encountered an error:

Exception in thread "main" java.lang.NullPointerException
javacssjavafx

Answer №1

Ensure to execute the lookup() method post adding the node to the stage and after calling the Stage.show() function. Here's an example illustrating this:

@Override
public void start(Stage primaryStage) {
    TitledPane root = new TitledPane();
    root.setText("Options");
    primaryStage.setScene(new Scene(root, 200, 100));
    primaryStage.show();

    root.lookup(".titled-pane > .title > .text").setStyle("-fx-font-weight: bold;");
}

In addition, make sure to utilize 

.titled-pane > .title > .text
to access the actual text label (documentation).

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