Answer to Stackoverflow question about delayed actions in JavaFX.

TransitionedInputExample.java

package application;

import javafx.animation.RotateTransition;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.image.ImageView;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontPosture;
import javafx.scene.text.FontWeight;
import javafx.stage.Stage;
import javafx.util.Duration;

public class TransitionedInputExample extends Application {
  @Override
  public void start(final Stage stage) {
    final ImageView spinner =
        new ImageView("https://cdn1.iconfinder.com/data/icons/duesseldorf/16/process.png");
    spinner.setVisible(false);

    final Label title = new Label("Timed Action Commander Example", spinner);
    title.setContentDisplay(ContentDisplay.BOTTOM);
    title.setFont(Font.font("Helvetica", FontWeight.BOLD, FontPosture.REGULAR, 16));

    final TextField textInput = new TextField();
    textInput.setPromptText("Enter command");

    final TextArea textOutput = new TextArea();
    textOutput.setPromptText("Command results will show up here");

    final VBox layout = new VBox(title, textInput, textOutput);
    layout.setSpacing(24);

    // setup some transition that rotates an icon for 2 seconds
    final RotateTransition rotateTransition = new RotateTransition(Duration.seconds(1), spinner);
    rotateTransition.setByAngle(90);
    // delay rotation so that user can type without being distracted at once
    rotateTransition.setDelay(Duration.seconds(1));

    // restart transition on user input
    textInput.textProperty().addListener((observable, oldText, newText) -> {
      spinner.setVisible(true);
      rotateTransition.playFromStart();
    });

    rotateTransition.setOnFinished((finishHim) -> {
      // execute command
        textOutput.setText("Executing " + textInput.getText());
        spinner.setVisible(false);
      });


    final Scene scene = new Scene(layout);
    stage.setScene(scene);
    stage.show();
  }

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