How to pass a value to fxml scene - user-interface

Question

I'm making this javaFX application, but in a given moment i wanna get the text exibited in the scene from a method in anothe class, how can i pass this value to my text box in the FXML doccument?
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import javafx.scene.control.*?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.72" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.crapgames.calourosimulator.views.pcna.intro.Introduction">
<children>
<ImageView fx:id="imgClick" fitHeight="600.0" fitWidth="800.0" onMouseClicked="#nextScene" pickOnBounds="true">
<image>
<Image url="#../../assets/pnca-monitor-text.png" />
</image>
</ImageView>
<Text fx:id="text1" fill="#f5eded" layoutX="8.0" layoutY="452.0" strokeType="OUTSIDE" strokeWidth="0.0" text="where i want my string variable" wrappingWidth="787.0">
<font>
<Font name="Comic Sans MS" size="25.0" />
</font></Text>
</children>
</AnchorPane>

Answer 1

Create a method in the controller class to accept the text value. You can leverage the textProperty of the Text if you want:
public class Introduction {
#FXML
private Text text1 ;
public StringProperty textProperty() {
return text1.textProperty();
}
public final void setText(String text) {
textProperty().set(text);
}
public final String getText() {
return textProperty().get();
}
// existing code ...
}
Now you can do:
FXMLLoader loader = new FXMLLoader(getClass().getResource("path/to/fxml/file.fxml"));
Parent root = loader.load();
Introduction controller = loader.getController();
controller.setText("Hello World!");
Scene scene = new Scene(root);
// etc...