JavaFX: GridPane Demo

Main.java

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) throws Exception {

        Button unoButton = new Button("Uno");
        Button dosButton = new Button("Dos");
        Button tresButton = new Button("Tres");
        Button cuatroButton = new Button("Cuatro");
        Button cincoButton = new Button("Cinco");

        unoButton.setMinWidth(80);
        dosButton.setMinWidth(80);
        tresButton.setMinWidth(80);
        cuatroButton.setMinWidth(80);
        cincoButton.setMinWidth(80);

        GridPane gridPane = new GridPane();
        gridPane.setPadding(new Insets(20));
        gridPane.setHgap(20); // Espacio entre columnas
        gridPane.setVgap(20); // Espacio entre filas

        gridPane.add(unoButton, 0, 0);
        gridPane.add(dosButton, 1, 0);
        gridPane.add(tresButton, 2, 0);
        gridPane.add(cuatroButton, 0, 1);
        gridPane.add(cincoButton, 2, 1);

        Scene scene = new Scene(gridPane, 400, 300);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}