Create Dialog using Stage

There are no standard Dialog in JavaFX 2.0. You can create your own dialog using javafx.stage.Stage.

package javafx_mydialog;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBoxBuilder;
import javafx.scene.text.Text;
import javafx.stage.Modality;
import javafx.stage.Stage;

/**
*
* @web http://java-buddy.blogspot.com/
*/
public class JavaFX_MyDialog extends Application {

  /**
   * @param args the command line arguments
   */
  public static void main(String[] args) {
      launch(args);
  }

  @Override
  public void start(Stage primaryStage) {
      primaryStage.setTitle("http://java-buddy.blogspot.com/");
      Button btn = new Button();
      btn.setText("Open Dialog");
      btn.setOnAction(new EventHandler<ActionEvent>() {

          @Override
          public void handle(ActionEvent event) {
              Stage myDialog = new Stage();
              myDialog.initModality(Modality.WINDOW_MODAL);
            
              Scene myDialogScene = new Scene(VBoxBuilder.create()
                      .children(new Text("Hello! it's My Dialog."))
                      .alignment(Pos.CENTER)
                      .padding(new Insets(10))
                      .build());
            
              myDialog.setScene(myDialogScene);
              myDialog.show();
          }
      });
    
      StackPane root = new StackPane();
      root.getChildren().add(btn);
      primaryStage.setScene(new Scene(root, 300, 250));
      primaryStage.show();
  }
}

More:
- Dialog with CLOSE button