# Class MenuBar

java.lang.Object
javafx.scene.Node
javafx.scene.Parent
javafx.scene.layout.Region
javafx.scene.control.Control
javafx.scene.control.MenuBar

All Implemented Interfaces:
  `Styleable, EventTarget, Skinnable`

@DefaultProperty("menus") public class MenuBar extends Control

A MenuBar control traditionally is placed at the very top of the user interface, and embedded within it are `Menus`. To add a menu to a menubar, you add it to the `menus` ObservableList. By default, for each menu added to the menubar, it will be represented as a button with the Menu `text` value displayed.

MenuBar sets focusTraversable to false.

To create and populate a `MenuBar`, you may do what is shown below. Please refer to the `Menu` API page for more information on how to configure it.

     Menu menu1 = new Menu("File");
    Menu menu2 = new Menu("Options");
    Menu menu3 = new Menu("Help");

    MenuBar menuBar = new MenuBar(menu1, menu2, menu3);

Since:
  JavaFX 2.0
See Also:
  - `Menu`
  - `MenuItem`

- ## Property Summary

  Properties
  Type
  Property
  Description
  `final BooleanProperty`
  `useSystemMenuBar`
  Use the system menu bar if the current platform supports it.

  ### 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
  `MenuBar()`
  Creates a new empty MenuBar.
  `MenuBar(Menu... menus)`
  Creates a new MenuBar populated with the given menus.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static List<CssMetaData<? extends Styleable, ?>>`
  `getClassCssMetaData()`
  Gets the `CssMetaData` associated with this class, which may include the `CssMetaData` of its superclasses.
  `List<CssMetaData<? extends Styleable, ?>>`
  `getControlCssMetaData()`
  Gets the unmodifiable list of the control's CSS-styleable properties.
  `protected Boolean`
  `getInitialFocusTraversable()`
  Returns the initial focus traversable state of this control, for use by the JavaFX CSS engine to correctly set its initial value.
  `final ObservableList<Menu>`
  `getMenus()`
  The menus to show within this MenuBar.
  `final boolean`
  `isUseSystemMenuBar()`
  Gets the value of the `useSystemMenuBar` property.
  `final void`
  `setUseSystemMenuBar(boolean value)`
  Sets the value of the `useSystemMenuBar` property.
  `final BooleanProperty`
  `useSystemMenuBarProperty()`
  Use the system menu bar if the current platform supports it.

  ### Methods declared in class Control

  `computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, contextMenuProperty, createDefaultSkin, getContextMenu, getCssMetaData, 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, getContentBias, 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

  - ### useSystemMenuBar

    public final BooleanProperty useSystemMenuBarProperty
    Use the system menu bar if the current platform supports it. This should not be set on more than one MenuBar instance per Stage. If this property is set to true on more than one MenuBar in the same Stage, then the last menu set is allowed to modify the system menu bar, and if there is an existing installed system menu it is unset and removed from the system menu bar. Note that trying to uni-directionally bind to this property will throw a RuntimeException. Please use bi-directional binding to this property instead.
    Since:
      JavaFX 2.1
    See Also:
      - `isUseSystemMenuBar()`
      - `setUseSystemMenuBar(boolean)`
      - `useSystemMenuBarProperty()`

- ## Constructor Details

  - ### MenuBar

    public MenuBar()
    Creates a new empty MenuBar.

  - ### MenuBar

    public MenuBar(Menu... menus)
    Creates a new MenuBar populated with the given menus.
    Parameters:
      `menus` - The menus to place inside the MenuBar
    Since:
      JavaFX 8u40

- ## Method Details

  - ### useSystemMenuBarProperty

    public final BooleanProperty useSystemMenuBarProperty()
    Use the system menu bar if the current platform supports it. This should not be set on more than one MenuBar instance per Stage. If this property is set to true on more than one MenuBar in the same Stage, then the last menu set is allowed to modify the system menu bar, and if there is an existing installed system menu it is unset and removed from the system menu bar. Note that trying to uni-directionally bind to this property will throw a RuntimeException. Please use bi-directional binding to this property instead.
    Returns:
      the use system menu bar property
    Since:
      JavaFX 2.1
    See Also:
      - `isUseSystemMenuBar()`
      - `setUseSystemMenuBar(boolean)`

  - ### setUseSystemMenuBar

    public final void setUseSystemMenuBar(boolean value)
    Sets the value of the `useSystemMenuBar` property.
    Property description:
      Use the system menu bar if the current platform supports it. This should not be set on more than one MenuBar instance per Stage. If this property is set to true on more than one MenuBar in the same Stage, then the last menu set is allowed to modify the system menu bar, and if there is an existing installed system menu it is unset and removed from the system menu bar. Note that trying to uni-directionally bind to this property will throw a RuntimeException. Please use bi-directional binding to this property instead.
    Parameters:
      `value` - the value for the `useSystemMenuBar` property
    Since:
      JavaFX 2.1
    See Also:
      - `isUseSystemMenuBar()`
      - `useSystemMenuBarProperty()`

  - ### isUseSystemMenuBar

    public final boolean isUseSystemMenuBar()
    Gets the value of the `useSystemMenuBar` property.
    Property description:
      Use the system menu bar if the current platform supports it. This should not be set on more than one MenuBar instance per Stage. If this property is set to true on more than one MenuBar in the same Stage, then the last menu set is allowed to modify the system menu bar, and if there is an existing installed system menu it is unset and removed from the system menu bar. Note that trying to uni-directionally bind to this property will throw a RuntimeException. Please use bi-directional binding to this property instead.
    Returns:
      the value of the `useSystemMenuBar` property
    Since:
      JavaFX 2.1
    See Also:
      - `setUseSystemMenuBar(boolean)`
      - `useSystemMenuBarProperty()`

  - ### getMenus

    public final ObservableList<Menu> getMenus()
    The menus to show within this MenuBar. If this ObservableList is modified at runtime, the MenuBar will update as expected.
    Returns:
      the list of menus to show within this MenuBar
    See Also:
      - `Menu`

  - ### getClassCssMetaData

    public static List<CssMetaData<? extends Styleable, ?>> getClassCssMetaData()
    Gets the `CssMetaData` associated with this class, which may include the `CssMetaData` of its superclasses.
    Returns:
      the `CssMetaData`
    Since:
      JavaFX 8.0

  - ### getControlCssMetaData

    public List<CssMetaData<? extends Styleable, ?>> getControlCssMetaData()
    Gets the unmodifiable list of the control's CSS-styleable properties.
    Overrides:
      `getControlCssMetaData` in class `Control`
    Returns:
      the unmodifiable list of the control's CSS-styleable properties
    Since:
      JavaFX 8.0

  - ### getInitialFocusTraversable

    protected Boolean getInitialFocusTraversable()
    Returns the initial focus traversable state of this control, for use by the JavaFX CSS engine to correctly set its initial value. This method is overridden as by default UI controls have focus traversable set to true, but that is not appropriate for this control.
    Overrides:
      `getInitialFocusTraversable` in class `Control`
    Returns:
      the initial focus traversable state of this control
    Since:
      9