Java, Groovy i JavaFX

Projekt

Pakiet	Aplikacja	Kontroler
hello1	Java	Java
hello2	Groovy	Groovy
hello3	Java	skrypt Groovy wbudowany
hello4	Groovy	skrypt Groovy wbudowany
hello5	Java	skrypt Groovy zewnętrzny

Klasy

HelloApplication1.java

package hello1;

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

public class HelloApplication1 extends Application {

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

    @Override
    public void start(Stage stage) {
        try{
        FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication1.class.getResource("/resources/hello-view1.fxml"));
        Scene scene = new Scene(fxmlLoader.load(), 320, 240);
        stage.setTitle("Hello!");
        stage.setScene(scene);
        stage.show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

HelloController1.java

package hello1;

import javafx.fxml.FXML;
import javafx.scene.control.Label;

public class HelloController1 {

    public HelloController1(){}
    @FXML
    private Label welcomeText;

    @FXML
    private void onHelloButtonClick() {
        welcomeText.setText("Welcome to JavaFX Application!");
    }
}

HelloApplication2.groovy

package hello2

import groovy.transform.CompileStatic
import javafx.application.Application
import javafx.fxml.FXMLLoader
import javafx.scene.Parent
import javafx.scene.Scene
import javafx.stage.Stage

@CompileStatic
class HelloApplication2 extends Application {
    @Override
    void start(Stage stage) {
        def fxmlLoader = new FXMLLoader(HelloApplication2.class.getResource("/resources/hello-view2.fxml"))
        def scene = new Scene(fxmlLoader.load() as Parent, 320, 240)
        stage.setTitle("Hello!")
        stage.setScene(scene)
        stage.show()
    }

    static void main(String[] args) {
        launch(HelloApplication2)
    }
}

HelloController2.groovy

package hello2

import javafx.fxml.FXML
import javafx.scene.control.Label

class HelloController2 {
    @FXML
    private Label welcomeText

    @FXML
    protected void onHelloButtonClick() {
        welcomeText.setText("Welcome to JavaFX Application!")
    }
}

HelloApplication3.java

package hello3;

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

public class HelloApplication3 extends Application {

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

    @Override
    public void start(Stage stage) {
        try{
        FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication3.class.getResource("/resources/hello-view3.fxml"));
        Scene scene = new Scene(fxmlLoader.load(), 320, 240);
        stage.setTitle("Hello!");
        stage.setScene(scene);
        stage.show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

HelloApplication4.groovy

package hello4

import groovy.transform.CompileStatic
import javafx.application.Application
import javafx.fxml.FXMLLoader
import javafx.scene.Parent
import javafx.scene.Scene
import javafx.stage.Stage

@CompileStatic
class HelloApplication4 extends Application {
    @Override
    void start(Stage stage) {
        def fxmlLoader = new FXMLLoader(HelloApplication4.class.getResource("/resources/hello-view4.fxml"))
        def scene = new Scene(fxmlLoader.load() as Parent, 320, 240)
        stage.setTitle("Hello!")
        stage.setScene(scene)
        stage.show()
    }

    static void main(String[] args) {
        launch(HelloApplication4)
    }
}

HelloApplication5.java

package hello5;

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

public class HelloApplication5 extends Application {

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

    @Override
    public void start(Stage stage) {
        try{
        FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication5.class.getResource("/resources/hello-view5.fxml"));
        Scene scene = new Scene(fxmlLoader.load(), 320, 240);
        stage.setTitle("Hello!");
        stage.setScene(scene);
        stage.show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

module-info.java

module javafxgroovy {
    requires java.sql;

    requires javafx.graphics;
    requires javafx.controls;
    requires javafx.fxml;

    requires org.apache.groovy;
    requires org.apache.groovy.sql;

    opens hello1 to javafx.fxml;
    opens hello2 to javafx.fxml;
    opens hello3 to javafx.fxml;
    opens hello4 to javafx.fxml;
    opens hello5 to javafx.fxml;
    exports hello1 to javafx.graphics, javafx.fxml;
    exports hello2 to javafx.graphics, javafx.fxml;
    exports hello3 to javafx.graphics, javafx.fxml;
    exports hello4 to javafx.graphics, javafx.fxml;
    exports hello5 to javafx.graphics, javafx.fxml;
}

hello-view1.fxml

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

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Button?>
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml" fx:controller="hello1.HelloController1">
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
    </padding>
    <Label fx:id="welcomeText"/>
    <Button text="Hello!" onAction="#onHelloButtonClick"/>
</VBox>

hello-view2.fxml

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

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Button?>
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml" fx:controller="hello2.HelloController2">
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
    </padding>
    <Label fx:id="welcomeText"/>
    <Button text="Hello!" onAction="#onHelloButtonClick"/>
</VBox>

hello-view3.fxml

<?xml version="1.0" encoding="UTF-8"?>
<?language groovy?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Button?>
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml">
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
    </padding>
    <Label fx:id="welcomeText"/>
    <Button text="Hello!" onAction="onHelloButtonClick()"/>
    <fx:script>
        def onHelloButtonClick() {
            welcomeText.setText("Welcome to JavaFX Application!")
        }
    </fx:script>
</VBox>

hello-view4.fxml

<?xml version="1.0" encoding="UTF-8"?>
<?language groovy?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Button?>
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml">
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
    </padding>
    <Label fx:id="welcomeText"/>
    <Button text="Hello!" onAction="onHelloButtonClick()"/>
    <fx:script>
        def onHelloButtonClick() {
            welcomeText.setText("Welcome to JavaFX Application!")
        }
    </fx:script>
</VBox>

hello-view5.fxml

<?xml version="1.0" encoding="UTF-8"?>
<?language groovy?>
<?compile true?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Button?>
<VBox alignment="CENTER" spacing="20.0" xmlns:fx="http://javafx.com/fxml">
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0"/>
    </padding>
    <Label fx:id="welcomeText"/>
    <Button text="Hello!" onAction="onHelloButtonClick()"/>
    <fx:script source="but.groovy" />
</VBox>

but.groovy

package resources

def welcomeText
def onHelloButtonClick() {
    welcomeText.setText("Welcome to JavaFX Application!")
}

Wnioski

W aplikacjach JavaFX, Java może być swobodnie zastępowana przez Groovy. Zarówno Java jak i Groovy mogą rozszerzać klasy JavaFX. Skrypty Groovy mogą być używane w plikach FXML i są doskonałym zamiennikiem wycofanych skryptów Nashorn.