Button (JavaFX 28)
Description: declaration: module: javafx.controls, package: javafx.scene.control, class: Button

# Class Button

java.lang.Object
javafx.scene.Node
javafx.scene.Parent
javafx.scene.layout.Region
javafx.scene.control.Control
javafx.scene.control.Labeled
javafx.scene.control.ButtonBase
javafx.scene.control.Button

All Implemented Interfaces:
  `Styleable, EventTarget, Skinnable`

public class Button extends ButtonBase

A simple button control. The button control can contain text and/or a graphic. A button control has three different modes

- Normal: A normal push button.
- Default: The default button is rendered differently to make it apparent to users that it should be the default choice should they be unclear as to what should be selected. The behavior of the default button differs depending on the platform in which it is presented:
  - Windows / Linux: A default Button receives `ENTER` key presses when it has focus. When the default button does not have focus, and focus is on another Button control, the ENTER key press will be received by the other, non-default Button. When focus is elsewhere in the user interface, and not on any Button, the ENTER key press will be received by the default button, if one is specified, and if no other node in the scene consumes it first.
  - Mac OS X: A default Button is the only Button in the user interface that responds to the ENTER key press. If focus is on another non-default Button and ENTER is pressed, the event is only received by the default Button. On macOS, the only way to fire a non-default Button is through the `SPACE` key.
- Cancel: A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.

When a button is pressed and released a `ActionEvent` is sent. Your application can perform some action based on this event by implementing an `EventHandler` to process the `ActionEvent`. Buttons can also respond to mouse events by implementing an `EventHandler` to process the `MouseEvent`

MnemonicParsing is enabled by default for Button.

Example:

    Button button = new Button("Click Me");

Since:
  JavaFX 2.0

- ## Property Summary

  Properties
  Type
  Property
  Description
  `final BooleanProperty`
  `cancelButton`
  A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
  `final BooleanProperty`
  `defaultButton`
  A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.

  ### Properties declared in class ButtonBase

  `armed, onAction`

  ### Properties declared in class Labeled

  `alignment, contentDisplay, ellipsisString, font, graphic, graphicTextGap, labelPadding, lineSpacing, mnemonicParsing, textAlignment, textFill, textOverrun, text, textTruncated, underline, wrapText`

  ### Properties declared in class Control

  `contextMenu, skin, tooltip`

  ### Properties declared in class Region

  `background, border, cacheShape, centerShape, height, insets, maxHeight, maxWidth, minHeight, minWidth, opaqueInsets, padding, prefHeight, prefWidth, scaleShape, shape, snapToPixel, width`

  ### Properties declared in class Parent

  `needsLayout`

  ### Properties declared in class Node

  `accessibleHelp, accessibleRoleDescription, accessibleRole, accessibleText, blendMode, boundsInLocal, boundsInParent, cacheHint, cache, clip, cursor, depthTest, disabled, disable, effectiveNodeOrientation, effect, eventDispatcher, focused, focusTraversable, focusVisible, focusWithin, hover, id, inputMethodRequests, layoutBounds, layoutX, layoutY, localToParentTransform, localToSceneTransform, managed, mouseTransparent, nodeOrientation, onContextMenuRequested, onDragDetected, onDragDone, onDragDropped, onDragEntered, onDragExited, onDragOver, onInputMethodTextChanged, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, onMouseDragDone, onMouseDragEntered, onMouseDragExited, onMouseDragged, onMouseDragOver, onMouseDragReleased, onMouseEntered, onMouseExited, onMouseMoved, onMousePressed, onMouseReleased, onRotate, onRotationFinished, onRotationStarted, onScrollFinished, onScroll, onScrollStarted, onSwipeDown, onSwipeLeft, onSwipeRight, onSwipeUp, onTouchMoved, onTouchPressed, onTouchReleased, onTouchStationary, onZoomFinished, onZoom, onZoomStarted, opacity, parent, pickOnBounds, pressed, rotate, rotationAxis, scaleX, scaleY, scaleZ, scene, style, translateX, translateY, translateZ, viewOrder, visible`

- ## Field Summary

  ### Fields declared in class Region

  `USE_COMPUTED_SIZE, USE_PREF_SIZE`

  ### Fields declared in class Node

  `BASELINE_OFFSET_SAME_AS_HEIGHT`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Button()`
  Creates a button with an empty string for its label.
  `Button(String text)`
  Creates a button with the specified text as its label.
  `Button(String text, Node graphic)`
  Creates a button with the specified text and icon for its label.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `final BooleanProperty`
  `cancelButtonProperty()`
  A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
  `final BooleanProperty`
  `defaultButtonProperty()`
  A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.
  `void`
  `fire()`
  Invoked when a user gesture indicates that an event for this `ButtonBase` should occur.
  `final boolean`
  `isCancelButton()`
  Gets the value of the `cancelButton` property.
  `final boolean`
  `isDefaultButton()`
  Gets the value of the `defaultButton` property.
  `final void`
  `setCancelButton(boolean value)`
  Sets the value of the `cancelButton` property.
  `final void`
  `setDefaultButton(boolean value)`
  Sets the value of the `defaultButton` property.

  ### Methods declared in class ButtonBase

  `arm, armedProperty, disarm, getOnAction, isArmed, onActionProperty, setOnAction`

  ### Methods declared in class Labeled

  `alignmentProperty, contentDisplayProperty, ellipsisStringProperty, fontProperty, getAlignment, getClassCssMetaData, getContentBias, getContentDisplay, getControlCssMetaData, getEllipsisString, getFont, getGraphic, getGraphicTextGap, getInitialAlignment, getLabelPadding, getLineSpacing, getText, getTextAlignment, getTextFill, getTextOverrun, graphicProperty, graphicTextGapProperty, isMnemonicParsing, isTextTruncated, isUnderline, isWrapText, labelPaddingProperty, lineSpacingProperty, mnemonicParsingProperty, setAlignment, setContentDisplay, setEllipsisString, setFont, setGraphic, setGraphicTextGap, setLineSpacing, setMnemonicParsing, setText, setTextAlignment, setTextFill, setTextOverrun, setUnderline, setWrapText, textAlignmentProperty, textFillProperty, textOverrunProperty, textProperty, textTruncatedProperty, underlineProperty, wrapTextProperty`

  ### Methods declared in class Control

  `computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, contextMenuProperty, createDefaultSkin, getContextMenu, getCssMetaData, getInitialFocusTraversable, getSkin, getTooltip, isResizable, setContextMenu, setSkin, setTooltip, skinProperty, tooltipProperty`

  ### Methods declared in class Region

  `backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computePrefHeight, computePrefWidth, getBackground, getBorder, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, insetsProperty, isCacheShape, isCenterShape, isScaleShape, isSnapToPixel, layoutInArea, layoutInArea, layoutInArea, layoutInArea, maxHeight, maxHeightProperty, maxWidth, maxWidthProperty, minHeight, minHeightProperty, minWidth, minWidthProperty, opaqueInsetsProperty, paddingProperty, positionInArea, positionInArea, prefHeight, prefHeightProperty, prefWidth, prefWidthProperty, resize, scaleShapeProperty, setBackground, setBorder, setCacheShape, setCenterShape, setHeight, setMaxHeight, setMaxSize, setMaxWidth, setMinHeight, setMinSize, setMinWidth, setOpaqueInsets, setPadding, setPrefHeight, setPrefSize, setPrefWidth, setScaleShape, setShape, setSnapToPixel, setWidth, shapeProperty, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapPositionX, snapPositionY, snapSize, snapSizeX, snapSizeY, snapSpace, snapSpaceX, snapSpaceY, snapToPixelProperty, widthProperty`

  ### Methods declared in class Parent

  `getBaselineOffset, getChildren, getChildrenUnmodifiable, getManagedChildren, getStylesheets, isNeedsLayout, layout, layoutChildren, needsLayoutProperty, requestLayout, requestParentLayout, setNeedsLayout, updateBounds`

  ### Methods declared in class Node

  `accessibleHelpProperty, accessibleRoleDescriptionProperty, accessibleRoleProperty, accessibleTextProperty, addEventFilter, addEventHandler, applyCss, autosize, blendModeProperty, boundsInLocalProperty, boundsInParentProperty, buildEventDispatchChain, cacheHintProperty, cacheProperty, clipProperty, computeAreaInScreen, contains, contains, cursorProperty, depthTestProperty, disabledProperty, disableProperty, effectiveNodeOrientationProperty, effectProperty, eventDispatcherProperty, executeAccessibleAction, fireEvent, focusedProperty, focusTraversableProperty, focusVisibleProperty, focusWithinProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, getInitialCursor, getInputMethodRequests, getLayoutBounds, getLayoutX, getLayoutY, getLocalToParentTransform, getLocalToSceneTransform, getNodeOrientation, getOnContextMenuRequested, getOnDragDetected, getOnDragDone, getOnDragDropped, getOnDragEntered, getOnDragExited, getOnDragOver, getOnInputMethodTextChanged, getOnKeyPressed, getOnKeyReleased, getOnKeyTyped, getOnMouseClicked, getOnMouseDragDone, getOnMouseDragEntered, getOnMouseDragExited, getOnMouseDragged, getOnMouseDragOver, getOnMouseDragReleased, getOnMouseEntered, getOnMouseExited, getOnMouseMoved, getOnMousePressed, getOnMouseReleased, getOnRotate, getOnRotationFinished, getOnRotationStarted, getOnScroll, getOnScrollFinished, getOnScrollStarted, getOnSwipeDown, getOnSwipeLeft, getOnSwipeRight, getOnSwipeUp, getOnTouchMoved, getOnTouchPressed, getOnTouchReleased, getOnTouchStationary, getOnZoom, getOnZoomFinished, getOnZoomStarted, getOpacity, getParent, getProperties, getPseudoClassStates, getRotate, getRotationAxis, getScaleX, getScaleY, getScaleZ, getScene, getStyle, getStyleableParent, getStyleClass, getTransforms, getTranslateX, getTranslateY, getTranslateZ, getTypeSelector, getUserData, getViewOrder, hasProperties, hoverProperty, idProperty, inputMethodRequestsProperty, intersects, intersects, isCache, isDisable, isDisabled, isFocused, isFocusTraversable, isFocusVisible, isFocusWithin, isHover, isManaged, isMouseTransparent, isPickOnBounds, isPressed, isVisible, layoutBoundsProperty, layoutXProperty, layoutYProperty, localToParent, localToParent, localToParent, localToParent, localToParent, localToParentTransformProperty, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToSceneTransformProperty, localToScreen, localToScreen, localToScreen, localToScreen, localToScreen, lookup, lookupAll, managedProperty, mouseTransparentProperty, nodeOrientationProperty, notifyAccessibleAttributeChanged, onContextMenuRequestedProperty, onDragDetectedProperty, onDragDoneProperty, onDragDroppedProperty, onDragEnteredProperty, onDragExitedProperty, onDragOverProperty, onInputMethodTextChangedProperty, onKeyPressedProperty, onKeyReleasedProperty, onKeyTypedProperty, onMouseClickedProperty, onMouseDragDoneProperty, onMouseDragEnteredProperty, onMouseDragExitedProperty, onMouseDraggedProperty, onMouseDragOverProperty, onMouseDragReleasedProperty, onMouseEnteredProperty, onMouseExitedProperty, onMouseMovedProperty, onMousePressedProperty, onMouseReleasedProperty, onRotateProperty, onRotationFinishedProperty, onRotationStartedProperty, onScrollFinishedProperty, onScrollProperty, onScrollStartedProperty, onSwipeDownProperty, onSwipeLeftProperty, onSwipeRightProperty, onSwipeUpProperty, onTouchMovedProperty, onTouchPressedProperty, onTouchReleasedProperty, onTouchStationaryProperty, onZoomFinishedProperty, onZoomProperty, onZoomStartedProperty, opacityProperty, parentProperty, parentToLocal, parentToLocal, parentToLocal, parentToLocal, parentToLocal, pickOnBoundsProperty, pressedProperty, pseudoClassStateChanged, queryAccessibleAttribute, relocate, removeEventFilter, removeEventHandler, requestFocus, requestFocusTraversal, resizeRelocate, rotateProperty, rotationAxisProperty, scaleXProperty, scaleYProperty, scaleZProperty, sceneProperty, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, screenToLocal, screenToLocal, screenToLocal, setAccessibleHelp, setAccessibleRole, setAccessibleRoleDescription, setAccessibleText, setBlendMode, setCache, setCacheHint, setClip, setCursor, setDepthTest, setDisable, setDisabled, setEffect, setEventDispatcher, setEventHandler, setFocused, setFocusTraversable, setHover, setId, setInputMethodRequests, setLayoutX, setLayoutY, setManaged, setMouseTransparent, setNodeOrientation, setOnContextMenuRequested, setOnDragDetected, setOnDragDone, setOnDragDropped, setOnDragEntered, setOnDragExited, setOnDragOver, setOnInputMethodTextChanged, setOnKeyPressed, setOnKeyReleased, setOnKeyTyped, setOnMouseClicked, setOnMouseDragDone, setOnMouseDragEntered, setOnMouseDragExited, setOnMouseDragged, setOnMouseDragOver, setOnMouseDragReleased, setOnMouseEntered, setOnMouseExited, setOnMouseMoved, setOnMousePressed, setOnMouseReleased, setOnRotate, setOnRotationFinished, setOnRotationStarted, setOnScroll, setOnScrollFinished, setOnScrollStarted, setOnSwipeDown, setOnSwipeLeft, setOnSwipeRight, setOnSwipeUp, setOnTouchMoved, setOnTouchPressed, setOnTouchReleased, setOnTouchStationary, setOnZoom, setOnZoomFinished, setOnZoomStarted, setOpacity, setPickOnBounds, setPressed, setRotate, setRotationAxis, setScaleX, setScaleY, setScaleZ, setStyle, setTranslateX, setTranslateY, setTranslateZ, setUserData, setViewOrder, setVisible, snapshot, snapshot, startDragAndDrop, startFullDrag, styleProperty, toBack, toFront, toString, translateXProperty, translateYProperty, translateZProperty, usesMirroring, viewOrderProperty, visibleProperty`

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

  ### Methods declared in interface Styleable

  `getStyleableNode`

- ## Property Details

  - ### defaultButton

    public final BooleanProperty defaultButtonProperty
    A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.
    See Also:
      - `isDefaultButton()`
      - `setDefaultButton(boolean)`
      - `defaultButtonProperty()`

  - ### cancelButton

    public final BooleanProperty cancelButtonProperty
    A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
    See Also:
      - `isCancelButton()`
      - `setCancelButton(boolean)`
      - `cancelButtonProperty()`

- ## Constructor Details

  - ### Button

    public Button()
    Creates a button with an empty string for its label.

  - ### Button

    public Button(String text)
    Creates a button with the specified text as its label.
    Parameters:
      `text` - A text string for its label.

  - ### Button

    public Button(String text, Node graphic)
    Creates a button with the specified text and icon for its label.
    Parameters:
      `text` - A text string for its label.
      `graphic` - the icon for its label.

- ## Method Details

  - ### setDefaultButton

    public final void setDefaultButton(boolean value)
    Sets the value of the `defaultButton` property.
    Property description:
      A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.
    Parameters:
      `value` - the value for the `defaultButton` property
    See Also:
      - `isDefaultButton()`
      - `defaultButtonProperty()`

  - ### isDefaultButton

    public final boolean isDefaultButton()
    Gets the value of the `defaultButton` property.
    Property description:
      A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.
    Returns:
      the value of the `defaultButton` property
    See Also:
      - `setDefaultButton(boolean)`
      - `defaultButtonProperty()`

  - ### defaultButtonProperty

    public final BooleanProperty defaultButtonProperty()
    A default Button is the button that receives a keyboard VK_ENTER press, if no other node in the scene consumes it.
    Returns:
      the `defaultButton` property
    See Also:
      - `isDefaultButton()`
      - `setDefaultButton(boolean)`

  - ### setCancelButton

    public final void setCancelButton(boolean value)
    Sets the value of the `cancelButton` property.
    Property description:
      A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
    Parameters:
      `value` - the value for the `cancelButton` property
    See Also:
      - `isCancelButton()`
      - `cancelButtonProperty()`

  - ### isCancelButton

    public final boolean isCancelButton()
    Gets the value of the `cancelButton` property.
    Property description:
      A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
    Returns:
      the value of the `cancelButton` property
    See Also:
      - `setCancelButton(boolean)`
      - `cancelButtonProperty()`

  - ### cancelButtonProperty

    public final BooleanProperty cancelButtonProperty()
    A Cancel Button is the button that receives a keyboard VK_ESC press, if no other node in the scene consumes it.
    Returns:
      the `cancelButton` property
    See Also:
      - `isCancelButton()`
      - `setCancelButton(boolean)`

  - ### fire

    public void fire()
    Invoked when a user gesture indicates that an event for this `ButtonBase` should occur.

    If invoked, this method will be executed regardless of the status of `ButtonBase.arm()`.

    Specified by:
      `fire` in class `ButtonBase`