In JavaFX, a Text object is a graphical representation of text that can be displayed on the screen. Here's an example of how to create and use a Text object:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class MyJavaFXApp extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        // Create a text object
        Text text = new Text("Hello, world!");
        
        // Create a scene and set it on the stage
        Scene scene = new Scene(text, 300, 250);
        primaryStage.setScene(scene);
        
        // Show the stage
        primaryStage.show();
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}

In this example, we create a Text object with the text "Hello, world!" and set the text as the content of the Scene object. The text is displayed on the screen in the default font and size. You can customize the appearance of the Text object using various properties, such as the font, size, color, and alignment.