import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.HBox; import javafx.stage.Stage; import javafx.scene.input.MouseEvent; public class ResizableApp extends Application { private double xOffset = 0; private double yOffset = 0; @Override public void start(Stage primaryStage) { Button resizableButton = new Button("Resizable Button"); resizableButton.getStyleClass().add("resizable-button"); resizableButton.setOnMousePressed((MouseEvent event) -> { xOffset = event.getSceneX(); yOffset = event.getSceneY(); }); resizableButton.setOnMouseDragged((MouseEvent event) -> { double xDelta = event.getSceneX() - xOffset; double yDelta = event.getSceneY() - yOffset; double newWidth = resizableButton.getWidth() + xDelta; double newHeight = resizableButton.getHeight() + yDelta; resizableButton.setPrefSize(newWidth, newHeight); xOffset = event.getSceneX(); yOffset = event.getSceneY(); }); HBox root = new HBox(resizableButton); Scene scene = new Scene(root, 400, 300); primaryStage.setScene(scene); primaryStage.show(); } public static void main(String[] args) { launch(args); } }