Module javafx.controls
Package javafx.scene.chart

## Class BarChart<X,​Y>

- java.lang.Object
- - javafx.scene.Node
  - - javafx.scene.Parent
    - - javafx.scene.layout.Region
      - - javafx.scene.chart.Chart
        - - javafx.scene.chart.XYChart<X,​Y>
          - - javafx.scene.chart.BarChart<X,​Y>

- All Implemented Interfaces:
    `Styleable`, `EventTarget`

      public class BarChart<X,​Y>
      extends XYChart<X,​Y>

  A chart that plots bars indicating data values for a category. The bars can be vertical or horizontal depending on which axis is a category axis.
  Since:
    JavaFX 2.0

- - ### Property Summary

    Properties
    Type | Property | Description
    --- | --- | ---
    `DoubleProperty` | `barGap` | The gap to leave between bars in the same category
    `DoubleProperty` | `categoryGap` | The gap to leave between bars in separate categories

    - ### Properties inherited from class javafx.scene.chart.XYChart

      `alternativeColumnFillVisible, alternativeRowFillVisible, data, horizontalGridLinesVisible, horizontalZeroLineVisible, verticalGridLinesVisible, verticalZeroLineVisible`

    - ### Properties inherited from class javafx.scene.chart.Chart

      `animated, legend, legendSide, legendVisible, title, titleSide`

    - ### Properties inherited from class javafx.scene.layout.Region

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

    - ### Properties inherited from class javafx.scene.Parent

      `needsLayout`

    - ### Properties inherited from class javafx.scene.Node

      `accessibleHelp, accessibleRoleDescription, accessibleRole, accessibleText, blendMode, boundsInLocal, boundsInParent, cacheHint, cache, clip, cursor, depthTest, disabled, disable, effectiveNodeOrientation, effect, eventDispatcher, focused, focusTraversable, hover, id, inputMethodRequests, layoutBounds, layoutX, layoutY, localToParentTransform, localToSceneTransform, managed, mouseTransparent, nodeOrientation, onContextMenuRequested, onDragDetected, onDragDone, onDragDropped, onDragEntered, onDragExited, onDragOver, onInputMethodTextChanged, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, 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`

  - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class javafx.scene.chart.XYChart

      `XYChart.Data<X,​Y>, XYChart.Series<X,​Y>`

  - ### Field Summary

    - ### Fields inherited from class javafx.scene.layout.Region

      `USE_COMPUTED_SIZE, USE_PREF_SIZE`

    - ### Fields inherited from class javafx.scene.Node

      `BASELINE_OFFSET_SAME_AS_HEIGHT`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `BarChart​(Axis<X> xAxis, Axis<Y> yAxis)` | Construct a new BarChart with the given axis.
    `BarChart​(Axis<X> xAxis, Axis<Y> yAxis, ObservableList<XYChart.Series<X,​Y>> data)` | Construct a new BarChart with the given axis and data.
    `BarChart​(Axis<X> xAxis, Axis<Y> yAxis, ObservableList<XYChart.Series<X,​Y>> data, double categoryGap)` | Construct a new BarChart with the given axis and data.

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `DoubleProperty` | `barGapProperty()` | The gap to leave between bars in the same category
    `DoubleProperty` | `categoryGapProperty()` | The gap to leave between bars in separate categories
    `protected void` | `dataItemAdded​(XYChart.Series<X,​Y> series, int itemIndex, XYChart.Data<X,​Y> item)` | Called when a data item has been added to a series.
    `protected void` | `dataItemChanged​(XYChart.Data<X,​Y> item)` | Called when a data item has changed, ie its xValue, yValue or extraValue has changed.
    `protected void` | `dataItemRemoved​(XYChart.Data<X,​Y> item, XYChart.Series<X,​Y> series)` | Called when a data item has been removed from data model but it is still visible on the chart.
    `double` | `getBarGap()` | Gets the value of the property barGap.
    `double` | `getCategoryGap()` | Gets the value of the property categoryGap.
    `static List<CssMetaData<? extends Styleable,​?>>` | `getClassCssMetaData()` |
    `List<CssMetaData<? extends Styleable,​?>>` | `getCssMetaData()` | This method should delegate to `Node.getClassCssMetaData()` so that a Node's CssMetaData can be accessed without the need for reflection.
    `protected void` | `layoutPlotChildren()` | Called to update and layout the plot children.
    `protected void` | `seriesAdded​(XYChart.Series<X,​Y> series, int seriesIndex)` | A series has been added to the charts data model.
    `protected void` | `seriesChanged​(ListChangeListener.Change<? extends XYChart.Series> c)` | Called when each atomic change is made to the list of series for this chart
    `protected void` | `seriesRemoved​(XYChart.Series<X,​Y> series)` | A series has been removed from the data model but it is still visible on the chart.
    `void` | `setBarGap​(double value)` | Sets the value of the property barGap.
    `void` | `setCategoryGap​(double value)` | Sets the value of the property categoryGap.

    - ### Methods inherited from class javafx.scene.chart.XYChart

      `alternativeColumnFillVisibleProperty, alternativeRowFillVisibleProperty, currentDisplayedExtraValueProperty, currentDisplayedXValueProperty, currentDisplayedYValueProperty, dataProperty, getCurrentDisplayedExtraValue, getCurrentDisplayedXValue, getCurrentDisplayedYValue, getData, getDisplayedDataIterator, getDisplayedSeriesIterator, getPlotChildren, getVerticalGridLinesVisible, getXAxis, getYAxis, horizontalGridLinesVisibleProperty, horizontalZeroLineVisibleProperty, isAlternativeColumnFillVisible, isAlternativeRowFillVisible, isHorizontalGridLinesVisible, isHorizontalZeroLineVisible, isVerticalZeroLineVisible, layoutChartChildren, removeDataItemFromDisplay, removeSeriesFromDisplay, setAlternativeColumnFillVisible, setAlternativeRowFillVisible, setCurrentDisplayedExtraValue, setCurrentDisplayedXValue, setCurrentDisplayedYValue, setData, setHorizontalGridLinesVisible, setHorizontalZeroLineVisible, setVerticalGridLinesVisible, setVerticalZeroLineVisible, updateAxisRange, updateLegend, verticalGridLinesVisibleProperty, verticalZeroLineVisibleProperty`

    - ### Methods inherited from class javafx.scene.chart.Chart

      `animate, animatedProperty, computeMinHeight, computeMinWidth, computePrefHeight, computePrefWidth, getAnimated, getChartChildren, getLegend, getLegendSide, getTitle, getTitleSide, isLegendVisible, layoutChildren, legendProperty, legendSideProperty, legendVisibleProperty, requestChartLayout, setAnimated, setLegend, setLegendSide, setLegendVisible, setTitle, setTitleSide, shouldAnimate, titleProperty, titleSideProperty`

    - ### Methods inherited from class javafx.scene.layout.Region

      `backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, getBackground, getBorder, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, insetsProperty, isCacheShape, isCenterShape, isResizable, 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 inherited from class javafx.scene.Parent

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

    - ### Methods inherited from class javafx.scene.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, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getContentBias, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, getInitialCursor, getInitialFocusTraversable, getInputMethodRequests, getLayoutBounds, getLayoutX, getLayoutY, getLocalToParentTransform, getLocalToSceneTransform, getNodeOrientation, getOnContextMenuRequested, getOnDragDetected, getOnDragDone, getOnDragDropped, getOnDragEntered, getOnDragExited, getOnDragOver, getOnInputMethodTextChanged, getOnKeyPressed, getOnKeyReleased, getOnKeyTyped, getOnMouseClicked, 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, 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, lookupAll, managedProperty, mouseTransparentProperty, nodeOrientationProperty, notifyAccessibleAttributeChanged, onContextMenuRequestedProperty, onDragDetectedProperty, onDragDoneProperty, onDragDroppedProperty, onDragEnteredProperty, onDragExitedProperty, onDragOverProperty, onInputMethodTextChangedProperty, onKeyPressedProperty, onKeyReleasedProperty, onKeyTypedProperty, onMouseClickedProperty, 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, relocate, removeEventFilter, removeEventHandler, requestFocus, 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, 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 inherited from class java.lang.Object

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

    - ### Methods inherited from interface javafx.css.Styleable

      `getStyleableNode`

- - ### Property Detail

    - #### barGap

          public final DoubleProperty barGapProperty

      The gap to leave between bars in the same category
      See Also:
        `getBarGap()`, `setBarGap(double)`

    - #### categoryGap

          public final DoubleProperty categoryGapProperty

      The gap to leave between bars in separate categories
      See Also:
        `getCategoryGap()`, `setCategoryGap(double)`

  - ### Constructor Detail

    - #### BarChart

          public BarChart​(Axis<X> xAxis,
                          Axis<Y> yAxis)

      Construct a new BarChart with the given axis. The two axis should be a ValueAxis/NumberAxis and a CategoryAxis, they can be in either order depending on if you want a horizontal or vertical bar chart.
      Parameters:
        `xAxis` - The x axis to use
        `yAxis` - The y axis to use

    - #### BarChart

          public BarChart​(Axis<X> xAxis,
                          Axis<Y> yAxis,
                          ObservableList<XYChart.Series<X,​Y>> data)

      Construct a new BarChart with the given axis and data. The two axis should be a ValueAxis/NumberAxis and a CategoryAxis, they can be in either order depending on if you want a horizontal or vertical bar chart.
      Parameters:
        `xAxis` - The x axis to use
        `yAxis` - The y axis to use
        `data` - The data to use, this is the actual list used so any changes to it will be reflected in the chart

    - #### BarChart

          public BarChart​(Axis<X> xAxis,
                          Axis<Y> yAxis,
                          ObservableList<XYChart.Series<X,​Y>> data,
                          double categoryGap)

      Construct a new BarChart with the given axis and data. The two axis should be a ValueAxis/NumberAxis and a CategoryAxis, they can be in either order depending on if you want a horizontal or vertical bar chart.
      Parameters:
        `xAxis` - The x axis to use
        `yAxis` - The y axis to use
        `data` - The data to use, this is the actual list used so any changes to it will be reflected in the chart
        `categoryGap` - The gap to leave between bars in separate categories

  - ### Method Detail

    - #### getBarGap

          public final double getBarGap()

      Gets the value of the property barGap.
      Property description:
        The gap to leave between bars in the same category

    - #### setBarGap

          public final void setBarGap​(double value)

      Sets the value of the property barGap.
      Property description:
        The gap to leave between bars in the same category

    - #### barGapProperty

          public final DoubleProperty barGapProperty()

      The gap to leave between bars in the same category
      See Also:
        `getBarGap()`, `setBarGap(double)`

    - #### getCategoryGap

          public final double getCategoryGap()

      Gets the value of the property categoryGap.
      Property description:
        The gap to leave between bars in separate categories

    - #### setCategoryGap

          public final void setCategoryGap​(double value)

      Sets the value of the property categoryGap.
      Property description:
        The gap to leave between bars in separate categories

    - #### categoryGapProperty

          public final DoubleProperty categoryGapProperty()

      The gap to leave between bars in separate categories
      See Also:
        `getCategoryGap()`, `setCategoryGap(double)`

    - #### dataItemAdded

          protected void dataItemAdded​(XYChart.Series<X,​Y> series,
                                       int itemIndex,
                                       XYChart.Data<X,​Y> item)

      Description copied from class: `XYChart`
      Called when a data item has been added to a series. This is where implementations of XYChart can create/add new nodes to getPlotChildren to represent this data item. They also may animate that data add with a fade in or similar if animated = true.
      Specified by:
        `dataItemAdded` in class `XYChart<X,​Y>`
      Parameters:
        `series` - The series the data item was added to
        `itemIndex` - The index of the new item within the series
        `item` - The new data item that was added

    - #### dataItemRemoved

          protected void dataItemRemoved​(XYChart.Data<X,​Y> item,
                                         XYChart.Series<X,​Y> series)

      Description copied from class: `XYChart`
      Called when a data item has been removed from data model but it is still visible on the chart. Its still visible so that you can handle animation for removing it in this method. After you are done animating the data item you must call removeDataItemFromDisplay() to remove the items node from being displayed on the chart.
      Specified by:
        `dataItemRemoved` in class `XYChart<X,​Y>`
      Parameters:
        `item` - The item that has been removed from the series
        `series` - The series the item was removed from

    - #### dataItemChanged

          protected void dataItemChanged​(XYChart.Data<X,​Y> item)

      Called when a data item has changed, ie its xValue, yValue or extraValue has changed.
      Specified by:
        `dataItemChanged` in class `XYChart<X,​Y>`
      Parameters:
        `item` - The data item who was changed

    - #### seriesChanged

          protected void seriesChanged​(ListChangeListener.Change<? extends XYChart.Series> c)

      Description copied from class: `XYChart`
      Called when each atomic change is made to the list of series for this chart
      Overrides:
        `seriesChanged` in class `XYChart<X,​Y>`
      Parameters:
        `c` - a Change instance representing the changes to the series

    - #### seriesAdded

          protected void seriesAdded​(XYChart.Series<X,​Y> series,
                                     int seriesIndex)

      Description copied from class: `XYChart`
      A series has been added to the charts data model. This is where implementations of XYChart can create/add new nodes to getPlotChildren to represent this series. Also you have to handle adding any data items that are already in the series. You may simply call dataItemAdded() for each one or provide some different animation for a whole series being added.
      Specified by:
        `seriesAdded` in class `XYChart<X,​Y>`
      Parameters:
        `series` - The series that has been added
        `seriesIndex` - The index of the new series

    - #### seriesRemoved

          protected void seriesRemoved​(XYChart.Series<X,​Y> series)

      Description copied from class: `XYChart`
      A series has been removed from the data model but it is still visible on the chart. Its still visible so that you can handle animation for removing it in this method. After you are done animating the data item you must call removeSeriesFromDisplay() to remove the series from the display list.
      Specified by:
        `seriesRemoved` in class `XYChart<X,​Y>`
      Parameters:
        `series` - The series that has been removed

    - #### layoutPlotChildren

          protected void layoutPlotChildren()

      Called to update and layout the plot children. This should include all work to updates nodes representing the plot on top of the axis and grid lines etc. The origin is the top left of the plot area, the plot area with can be got by getting the width of the x axis and its height from the height of the y axis.
      Specified by:
        `layoutPlotChildren` in class `XYChart<X,​Y>`

    - #### getClassCssMetaData

          public static List<CssMetaData<? extends Styleable,​?>> getClassCssMetaData()

      Returns:
        The CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
      Since:
        JavaFX 8.0

    - #### getCssMetaData

          public List<CssMetaData<? extends Styleable,​?>> getCssMetaData()

      This method should delegate to `Node.getClassCssMetaData()` so that a Node's CssMetaData can be accessed without the need for reflection.
      Specified by:
        `getCssMetaData` in interface `Styleable`
      Overrides:
        `getCssMetaData` in class `XYChart<X,​Y>`
      Returns:
        The CssMetaData associated with this node, which may include the CssMetaData of its superclasses.
      Since:
        JavaFX 8.0