JavaFX Simple FXML-Controler Sample

Form.xml

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import java.net.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<AnchorPane id="AnchorPane" prefHeight="100.0" prefWidth="320.0" xmlns:fx="http://javafx.com/fxml" fx:controller="FormController">
  <children>
    <HBox alignment="CENTER" prefHeight="32.0" prefWidth="320.0" spacing="20.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
      <children>
        <TextField fx:id="field" prefWidth="200.0" />
        <Button fx:id="button" onAction="#handleAction" text="Submit" />
      </children>
    </HBox>
    <Label fx:id="label" minHeight="16.0" minWidth="69.0" AnchorPane.bottomAnchor="20.0" AnchorPane.leftAnchor="20.0" AnchorPane.rightAnchor="20.0" AnchorPane.topAnchor="40.0" />
  </children>
  <stylesheets>
    <URL value="@formstyle.css" />
  </stylesheets>
</AnchorPane>

FormController.java

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;
import javafx.scene.control.TextField;

public class FormController implements Initializable {
    
    @FXML
    private TextField field;

    @FXML
    private Label label;
    
    @FXML
    private void handleAction(ActionEvent event) {
        // TextFiled から文字列を取得
        String text = field.getText();
        
        // TextFieldから取得した文字列をLabelにセット
        label.setText(text);
    }
    
    @Override
    public void initialize(URL url, ResourceBundle rb) {
    }    
}

FormSample.java

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class FormSample extends Application {
    
    @Override
    public void start(Stage stage) throws Exception {
        stage.setTitle("Forrm Sample");
        
        Parent root = FXMLLoader.load(getClass().getResource("Form.fxml"));
        Scene scene = new Scene(root);
        
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

formstyle.css

.text-field {
    -fx-font-size: 16pt;
}

.button {
    -fx-font-size: 16pt;
}

.label {
    -fx-font-size: 36pt;
}