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JavaFX: Ejemplo usando FXML
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import javafx.event.ActionEvent; | |
import javafx.fxml.FXML; | |
import javafx.scene.control.Label; | |
import javafx.scene.control.TextField; | |
public class Controller { | |
@FXML | |
private TextField numero1TextField; | |
@FXML | |
private TextField numero2TextField; | |
@FXML | |
private Label resultadoLabel; | |
public void sumar(ActionEvent actionEvent) { | |
System.out.println("sumar"); | |
int numero1 = Integer.parseInt(numero1TextField.getText()); | |
int numero2 = Integer.parseInt(numero2TextField.getText()); | |
int resultado = numero1 + numero2; | |
resultadoLabel.setText(resultado + ""); | |
} | |
} |
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import javafx.application.Application; | |
import javafx.fxml.FXMLLoader; | |
import javafx.scene.Parent; | |
import javafx.scene.Scene; | |
import javafx.stage.Stage; | |
public class Main extends Application { | |
@Override | |
public void start(Stage primaryStage) throws Exception{ | |
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml")); | |
primaryStage.setTitle("Una suma"); | |
primaryStage.setScene(new Scene(root, 300, 275)); | |
primaryStage.show(); | |
} | |
public static void main(String[] args) { | |
launch(args); | |
} | |
} |
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<?xml version="1.0" encoding="UTF-8"?> | |
<?import javafx.geometry.Insets?> | |
<?import javafx.scene.control.Button?> | |
<?import javafx.scene.control.Label?> | |
<?import javafx.scene.control.TextField?> | |
<?import javafx.scene.layout.ColumnConstraints?> | |
<?import javafx.scene.layout.GridPane?> | |
<?import javafx.scene.layout.RowConstraints?> | |
<?import javafx.scene.layout.VBox?> | |
<GridPane alignment="center" hgap="10" vgap="10" xmlns="http://javafx.com/javafx/8.0.112" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller"> | |
<columnConstraints> | |
<ColumnConstraints /> | |
</columnConstraints> | |
<rowConstraints> | |
<RowConstraints /> | |
</rowConstraints> | |
<children> | |
<VBox prefHeight="200.0" prefWidth="300.0" spacing="20"> | |
<padding> | |
<Insets bottom="20" left="20" right="20" top="20" /> | |
</padding> | |
<children> | |
<TextField fx:id="numero1TextField" promptText="Número 1" /> | |
<TextField fx:id="numero2TextField" promptText="Número 2" /> | |
<Button mnemonicParsing="false" onAction="#sumar" text="Sumar" /> | |
<Label text="Resultado" fx:id="resultadoLabel" /> | |
</children> | |
<opaqueInsets> | |
<Insets /> | |
</opaqueInsets> | |
</VBox> | |
</children> | |
</GridPane> |
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