Controllers and fxml in javafx

The method in the Controller specified by the fmlx file in javafx must be public if the @ fxml annotation is not added.

The following is the test code:

Javafxapplication5/testjavafx/src/testfxml/testcontroller/samplecontroller. Java

Package testfxml. testcontroller;/** to change this template, choose tools | templates * and open the template in the editor. */import java.net. URL; import Java. util. resourcebundle; import javafx. event. actionevent; import javafx. fxml. fxml; import javafx. fxml. initializable; import javafx. scene. control. label;/***** @ author administrator */public class samplecontroller implements initializable {@ fxml PRI Vate label Label;/***. If @ fxml is added before the method name, the method can be private * if not written, only public */Public void handlebuttonaction (actionevent event) {// @ fxml/private void handlebuttonaction (actionevent event) {system. out. println ("You clicked me! "); Label. settext (" Hello world! ") ;}@ Override public void initialize (URL, resourcebundle Rb) {// todo }}

/Testjavafx/src/testfxml/testcontroller/javafxapplication5.java

/* * To change this template, choose Tools | Templates * and open the template in the editor. */package testFXML.testController;import javafx.application.Application;import javafx.fxml.FXMLLoader;import javafx.scene.Parent;import javafx.scene.Scene;import javafx.stage.Stage;/** * * @author Administrator */public class JavaFXApplication5 extends Application {        @Override    public void start(Stage stage) throws Exception {        Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));                Scene scene = new Scene(root);                stage.setScene(scene);        stage.show();    }    /**     * The main() method is ignored in correctly deployed JavaFX application.     * main() serves only as fallback in case the application can not be     * launched through deployment artifacts, e.g., in IDEs with limited FX     * support. NetBeans ignores main().     *     * @param args the command line arguments     */    public static void main(String[] args) {        launch(args);    }}

/Testjavafx/src/testfxml/testcontroller/sample. fxml

<?xml version="1.0" encoding="UTF-8"?><?import java.lang.*?><?import java.util.*?><?import javafx.scene.*?><?import javafx.scene.control.*?><?import javafx.scene.layout.*?><AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320" xmlns:fx="http://javafx.com/fxml" fx:controller="testFXML.testController.SampleController">    <children>        <Button layoutX="126" layoutY="90" text="Click Me!" onAction="#handleButtonAction" fx:id="button" />        <Label layoutX="126" layoutY="120" minHeight="16" minWidth="69" fx:id="label" />    </children></AnchorPane>

We can see the writing method in the controller.