BorderPane (JavaFX 19)
Description: declaration: module: javafx.graphics, package: javafx.scene.layout, class: BorderPane

Module javafx.graphics
Package javafx.scene.layout

# Class BorderPane

java.lang.Object
javafx.scene.Node
javafx.scene.Parent
javafx.scene.layout.Region
javafx.scene.layout.Pane
javafx.scene.layout.BorderPane

All Implemented Interfaces:
  `Styleable`, `EventTarget`

public class BorderPane extends Pane
BorderPane lays out children in top, left, right, bottom, and center positions.

The top and bottom children will be resized to their preferred heights and extend the width of the border pane. The left and right children will be resized to their preferred widths and extend the length between the top and bottom nodes. And the center node will be resized to fill the available space in the middle. Any of the positions may be null. Example:

         BorderPane borderPane = new BorderPane();
         ToolBar toolbar = new ToolBar();
         HBox statusbar = new HBox();
         Node appContent = new AppContentNode();
         borderPane.setTop(toolbar);
         borderPane.setCenter(appContent);
         borderPane.setBottom(statusbar);

Borderpanes may be styled with backgrounds and borders using CSS. See `Region` superclass for details.

BorderPane honors the minimum, preferred, and maximum sizes of its children. If the child's resizable range prevents it from be resized to fit within its position, it will be aligned relative to the space using a default alignment as follows:

- top: Pos.TOP_LEFT
- bottom: Pos.BOTTOM_LEFT
- left: Pos.TOP_LEFT
- right: Pos.TOP_RIGHT
- center: Pos.CENTER

See "Optional Layout Constraints" on how to customize these alignments.

BorderPane lays out each child set in the five positions regardless of the child's visible property value; unmanaged children are ignored.

## Resizable Range

BorderPane is commonly used as the root of a `Scene`, in which case its size will track the size of the scene. If the scene or stage size has not been directly set by the application, the scene size will be initialized to the border pane's preferred size. However, if a border pane has a parent other than the scene, that parent will resize the border pane within the border pane's resizable range during layout. By default the border pane computes this range based on its content as outlined in the table below.

BorderPane Resize Table
| width | height
minimum | left/right insets plus width required to display right/left children at their pref widths and top/bottom/center with at least their min widths | top/bottom insets plus height required to display top/bottom children at their pref heights and left/right/center with at least their min heights
preferred | left/right insets plus width required to display top/right/bottom/left/center children with at least their pref widths | top/bottom insets plus height required to display top/right/bottom/left/center children with at least their pref heights
maximum | Double.MAX_VALUE | Double.MAX_VALUE

A border pane's unbounded maximum width and height are an indication to the parent that it may be resized beyond its preferred size to fill whatever space is assigned to it.

BorderPane provides properties for setting the size range directly. These properties default to the sentinel value Region.USE_COMPUTED_SIZE, however the application may set them to other values as needed:

         borderPane.setPrefSize(500,400);

Applications may restore the computed values by setting these properties back to Region.USE_COMPUTED_SIZE.

BorderPane does not clip its content by default, so it is possible that children's bounds may extend outside its own bounds if a child's min size prevents it from being fit within it space.

## Optional Layout Constraints

An application may set constraints on individual children to customize BorderPane's layout. For each constraint, BorderPane provides a static method for setting it on the child.

BorderPane Constraint Table
Constraint | Type | Description
--- | --- | ---
alignment | javafx.geometry.Pos | The alignment of the child within its area of the border pane.
margin | javafx.geometry.Insets | Margin space around the outside of the child.

Example:

         ListView list = new ListView();
         BorderPane.setAlignment(list, Pos.TOP_LEFT);
         BorderPane.setMargin(list, new Insets(12,12,12,12));
         borderPane.setCenter(list);

Since:
  JavaFX 2.0

- ## Property Summary

  Properties
  Type
  Property
  Description
  `final ObjectProperty<Node>`
  `bottom`
  The node placed on the bottom edge of this border pane.
  `final ObjectProperty<Node>`
  `center`
  The node placed in the center of this border pane.
  `final ObjectProperty<Node>`
  `left`
  The node placed on the left edge of this border pane.
  `final ObjectProperty<Node>`
  `right`
  The node placed on the right edge of this border pane.
  `final ObjectProperty<Node>`
  `top`
  The node placed on the top edge of this border pane.

  ### Properties declared in class javafx.scene.layout.Region

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

  ### Properties declared in class javafx.scene.Parent

  `needsLayout`

  ### Properties declared in class javafx.scene.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, 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 javafx.scene.layout.Region

  `USE_COMPUTED_SIZE, USE_PREF_SIZE`

  ### Fields declared in class javafx.scene.Node

  `BASELINE_OFFSET_SAME_AS_HEIGHT`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `BorderPane()`
  Creates a BorderPane layout.
  `BorderPane(Node center)`
  Creates an BorderPane layout with the given Node as the center of the BorderPane.
  `BorderPane(Node center, Node top, Node right, Node bottom, Node left)`
  Creates an BorderPane layout with the given Nodes to use for each of the main layout areas of the Border Pane.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `final ObjectProperty<Node>`
  `bottomProperty()`
  The node placed on the bottom edge of this border pane.
  `final ObjectProperty<Node>`
  `centerProperty()`
  The node placed in the center of this border pane.
  `static void`
  `clearConstraints(Node child)`
  Removes all border pane constraints from the child node.
  `static Pos`
  `getAlignment(Node child)`
  Returns the child's alignment constraint if set.
  `final Node`
  `getBottom()`
  Gets the value of the property bottom.
  `final Node`
  `getCenter()`
  Gets the value of the property center.
  `Orientation`
  `getContentBias()`
  Returns the orientation of a node's resizing bias for layout purposes.
  `final Node`
  `getLeft()`
  Gets the value of the property left.
  `static Insets`
  `getMargin(Node child)`
  Returns the child's margin constraint if set.
  `final Node`
  `getRight()`
  Gets the value of the property right.
  `final Node`
  `getTop()`
  Gets the value of the property top.
  `final ObjectProperty<Node>`
  `leftProperty()`
  The node placed on the left edge of this border pane.
  `final ObjectProperty<Node>`
  `rightProperty()`
  The node placed on the right edge of this border pane.
  `static void`
  `setAlignment(Node child, Pos value)`
  Sets the alignment for the child when contained by a border pane.
  `final void`
  `setBottom(Node value)`
  Sets the value of the property bottom.
  `final void`
  `setCenter(Node value)`
  Sets the value of the property center.
  `final void`
  `setLeft(Node value)`
  Sets the value of the property left.
  `static void`
  `setMargin(Node child, Insets value)`
  Sets the margin for the child when contained by a border pane.
  `final void`
  `setRight(Node value)`
  Sets the value of the property right.
  `final void`
  `setTop(Node value)`
  Sets the value of the property top.
  `final ObjectProperty<Node>`
  `topProperty()`
  The node placed on the top edge of this border pane.

  ### Methods declared in class javafx.scene.layout.Pane

  `getChildren`

  ### Methods declared in class javafx.scene.layout.Region

  `backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, computePrefHeight, computePrefWidth, getBackground, getBorder, getClassCssMetaData, getCssMetaData, 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 declared in class javafx.scene.Parent

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

  ### Methods declared in 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, focusVisibleProperty, focusWithinProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, 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, 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, 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, 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 declared in class java.lang.Object

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

  ### Methods declared in interface javafx.css.Styleable

  `getStyleableNode`

- ## Property Details

  - ### center

    public final ObjectProperty<Node> centerProperty
    The node placed in the center of this border pane. If resizable, it will be resized fill the center of the border pane between the top, bottom, left, and right nodes. If the node cannot be resized to fill the center space (it's not resizable or its max size prevents it) then it will be center aligned unless the child's alignment constraint has been set.
    See Also:
      - `getCenter()`
      - `setCenter(Node)`

  - ### top

    public final ObjectProperty<Node> topProperty
    The node placed on the top edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the top space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getTop()`
      - `setTop(Node)`

  - ### bottom

    public final ObjectProperty<Node> bottomProperty
    The node placed on the bottom edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the bottom space (it's not resizable or its max size prevents it) then it will be aligned bottom-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getBottom()`
      - `setBottom(Node)`

  - ### left

    public final ObjectProperty<Node> leftProperty
    The node placed on the left edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the left space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getLeft()`
      - `setLeft(Node)`

  - ### right

    public final ObjectProperty<Node> rightProperty
    The node placed on the right edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the right space (it's not resizable or its max size prevents it) then it will be aligned top-right within the space unless the child's alignment constraint has been set.
    See Also:
      - `getRight()`
      - `setRight(Node)`

- ## Constructor Details

  - ### BorderPane

    public BorderPane()
    Creates a BorderPane layout.

  - ### BorderPane

    public BorderPane(Node center)
    Creates an BorderPane layout with the given Node as the center of the BorderPane.
    Parameters:
      `center` - The node to set as the center of the BorderPane.
    Since:
      JavaFX 8.0

  - ### BorderPane

    public BorderPane(Node center, Node top, Node right, Node bottom, Node left)
    Creates an BorderPane layout with the given Nodes to use for each of the main layout areas of the Border Pane. The top, right, bottom, and left nodes are listed in clockwise order.
    Parameters:
      `center` - The node to set as the center of the BorderPane.
      `top` - The node to set as the top of the BorderPane.
      `right` - The node to set as the right of the BorderPane.
      `bottom` - The node to set as the bottom of the BorderPane.
      `left` - The node to set as the left of the BorderPane.
    Since:
      JavaFX 8.0

- ## Method Details

  - ### setAlignment

    public static void setAlignment(Node child, Pos value)
    Sets the alignment for the child when contained by a border pane. If set, will override the border pane's default alignment for the child's position. Setting the value to null will remove the constraint.
    Parameters:
      `child` - the child node of a border pane
      `value` - the alignment position for the child

  - ### getAlignment

    public static Pos getAlignment(Node child)
    Returns the child's alignment constraint if set.
    Parameters:
      `child` - the child node of a border pane
    Returns:
      the alignment position for the child or null if no alignment was set

  - ### setMargin

    public static void setMargin(Node child, Insets value)
    Sets the margin for the child when contained by a border pane. If set, the border pane will lay it out with the margin space around it. Setting the value to null will remove the constraint.
    Parameters:
      `child` - the child node of a border pane
      `value` - the margin of space around the child

  - ### getMargin

    public static Insets getMargin(Node child)
    Returns the child's margin constraint if set.
    Parameters:
      `child` - the child node of a border pane
    Returns:
      the margin for the child or null if no margin was set

  - ### clearConstraints

    public static void clearConstraints(Node child)
    Removes all border pane constraints from the child node.
    Parameters:
      `child` - the child node

  - ### centerProperty

    public final ObjectProperty<Node> centerProperty()
    The node placed in the center of this border pane. If resizable, it will be resized fill the center of the border pane between the top, bottom, left, and right nodes. If the node cannot be resized to fill the center space (it's not resizable or its max size prevents it) then it will be center aligned unless the child's alignment constraint has been set.
    See Also:
      - `getCenter()`
      - `setCenter(Node)`

  - ### setCenter

    public final void setCenter(Node value)
    Sets the value of the property center.
    Property description:
      The node placed in the center of this border pane. If resizable, it will be resized fill the center of the border pane between the top, bottom, left, and right nodes. If the node cannot be resized to fill the center space (it's not resizable or its max size prevents it) then it will be center aligned unless the child's alignment constraint has been set.

  - ### getCenter

    public final Node getCenter()
    Gets the value of the property center.
    Property description:
      The node placed in the center of this border pane. If resizable, it will be resized fill the center of the border pane between the top, bottom, left, and right nodes. If the node cannot be resized to fill the center space (it's not resizable or its max size prevents it) then it will be center aligned unless the child's alignment constraint has been set.

  - ### topProperty

    public final ObjectProperty<Node> topProperty()
    The node placed on the top edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the top space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getTop()`
      - `setTop(Node)`

  - ### setTop

    public final void setTop(Node value)
    Sets the value of the property top.
    Property description:
      The node placed on the top edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the top space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

  - ### getTop

    public final Node getTop()
    Gets the value of the property top.
    Property description:
      The node placed on the top edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the top space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

  - ### bottomProperty

    public final ObjectProperty<Node> bottomProperty()
    The node placed on the bottom edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the bottom space (it's not resizable or its max size prevents it) then it will be aligned bottom-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getBottom()`
      - `setBottom(Node)`

  - ### setBottom

    public final void setBottom(Node value)
    Sets the value of the property bottom.
    Property description:
      The node placed on the bottom edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the bottom space (it's not resizable or its max size prevents it) then it will be aligned bottom-left within the space unless the child's alignment constraint has been set.

  - ### getBottom

    public final Node getBottom()
    Gets the value of the property bottom.
    Property description:
      The node placed on the bottom edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the bottom space (it's not resizable or its max size prevents it) then it will be aligned bottom-left within the space unless the child's alignment constraint has been set.

  - ### leftProperty

    public final ObjectProperty<Node> leftProperty()
    The node placed on the left edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the left space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.
    See Also:
      - `getLeft()`
      - `setLeft(Node)`

  - ### setLeft

    public final void setLeft(Node value)
    Sets the value of the property left.
    Property description:
      The node placed on the left edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the left space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

  - ### getLeft

    public final Node getLeft()
    Gets the value of the property left.
    Property description:
      The node placed on the left edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the left space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

  - ### rightProperty

    public final ObjectProperty<Node> rightProperty()
    The node placed on the right edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the right space (it's not resizable or its max size prevents it) then it will be aligned top-right within the space unless the child's alignment constraint has been set.
    See Also:
      - `getRight()`
      - `setRight(Node)`

  - ### setRight

    public final void setRight(Node value)
    Sets the value of the property right.
    Property description:
      The node placed on the right edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the right space (it's not resizable or its max size prevents it) then it will be aligned top-right within the space unless the child's alignment constraint has been set.

  - ### getRight

    public final Node getRight()
    Gets the value of the property right.
    Property description:
      The node placed on the right edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the right space (it's not resizable or its max size prevents it) then it will be aligned top-right within the space unless the child's alignment constraint has been set.

  - ### getContentBias

    public Orientation getContentBias()
    Description copied from class: `Node`
    Returns the orientation of a node's resizing bias for layout purposes. If the node type has no bias, returns null. If the node is resizable and it's height depends on its width, returns HORIZONTAL, else if its width depends on its height, returns VERTICAL.

    Resizable subclasses should override this method to return an appropriate value.

    Overrides:
      `getContentBias` in class `Node`
    Returns:
      null unless the center, right, bottom, left or top has a content bias.
    See Also:
      - `Node.isResizable()`
      - `Node.minWidth(double)`
      - `Node.minHeight(double)`
      - `Node.prefWidth(double)`
      - `Node.prefHeight(double)`
      - `Node.maxWidth(double)`
      - `Node.maxHeight(double)`