What are the types of buttons provided by JavaFX?

JavaFXObject Oriented ProgrammingProgramming

A button controls in user interface applications, in general, on clicking the button it performs the respective action.

You can create a Button by instantiating the javafx.scene.control.Button class. Using this class, you can create three kinds of buttons. They are −

  • Normal − A regular button that triggers respective action (if any) when pressed.

  • Default − In case of in focus this button is triggered when the Enter button is pressed. You can set a button as the default button bypassing “true” as a value to the setDefaultButton() method.

  • Cancel −In case of in focus this button is triggered when the Esc button is pressed. You can set a button as cancel button bypassing “true” as a value to the setCancelButton() method.

Example

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class ButtonTypes extends Application {
   @Override
   public void start(Stage stage) {
      //Creating a Button
      Button defaultBtn = new Button();
      defaultBtn.setFocusTraversable(true);
      defaultBtn.setText("Default (Enter)");
      defaultBtn.setTranslateX(150);
      defaultBtn.setTranslateY(65);
      //Setting as default button
      defaultBtn.setDefaultButton(true);
      //Adding action listener
      defaultBtn.setOnAction(e -> {
         System.out.println("Default Button Clicked.");
      });
      Button cancel = new Button();
      //Setting properties
      cancel.setFocusTraversable(true);
      cancel.setText("Cancel (Esc)");
      cancel.setTranslateX(300);
      cancel.setTranslateY(65);
      //Setting the cancel button
      cancel.setCancelButton(true);
      //Adding action listener
      cancel.setOnAction(e -> {
         System.out.println("Cancel Button Clicked.");
      });
      Button btn = new Button();
      btn.setText("Sample");
      btn.setTranslateX(450);
      btn.setTranslateY(65);
      //Adding action listener
      btn.setOnAction(e -> {
         System.out.println("sample Button Clicked.");
      });
      //Setting the stage
      Group root = new Group(defaultBtn, cancel, btn);
      Scene scene = new Scene(root, 595, 150, Color.BEIGE);
      stage.setTitle("Button Example");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Output

On pressing enter the Default button will be triggered and, on pressing escape the Cancel button will be triggered.

raja
Published on 16-May-2020 10:48:17
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