MetalScrollPaneUI (Java Platform SE 8 )
Keywords: javax.swing.plaf.metal.MetalScrollPaneUI class
Date: 2026-03-29

javax.swing.plaf.metal

## Class MetalScrollPaneUI

- java.lang.Object
- - javax.swing.plaf.ComponentUI
  - - javax.swing.plaf.ScrollPaneUI
    - - javax.swing.plaf.basic.BasicScrollPaneUI
      - - javax.swing.plaf.metal.MetalScrollPaneUI

- All Implemented Interfaces:
    ScrollPaneConstants

      public class MetalScrollPaneUI
      extends BasicScrollPaneUI

  A Metal L&F implementation of ScrollPaneUI.

  Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the `java.beans` package. Please see `XMLEncoder`.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

      `BasicScrollPaneUI.HSBChangeListener, BasicScrollPaneUI.MouseWheelHandler, BasicScrollPaneUI.PropertyChangeHandler, BasicScrollPaneUI.ViewportChangeHandler, BasicScrollPaneUI.VSBChangeListener`

  - ### Field Summary

    - ### Fields inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

      `hsbChangeListener, scrollpane, spPropertyChangeListener, viewportChangeListener, vsbChangeListener`

    - ### Fields inherited from interface javax.swing.ScrollPaneConstants

      `COLUMN_HEADER, HORIZONTAL_SCROLLBAR, HORIZONTAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED, HORIZONTAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_POLICY, LOWER_LEADING_CORNER, LOWER_LEFT_CORNER, LOWER_RIGHT_CORNER, LOWER_TRAILING_CORNER, ROW_HEADER, UPPER_LEADING_CORNER, UPPER_LEFT_CORNER, UPPER_RIGHT_CORNER, UPPER_TRAILING_CORNER, VERTICAL_SCROLLBAR, VERTICAL_SCROLLBAR_ALWAYS, VERTICAL_SCROLLBAR_AS_NEEDED, VERTICAL_SCROLLBAR_NEVER, VERTICAL_SCROLLBAR_POLICY, VIEWPORT`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `MetalScrollPaneUI()`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected PropertyChangeListener` | `createScrollBarSwapListener()`
    `static ComponentUI` | `createUI(JComponent x)`
    `void` | `installListeners(JScrollPane scrollPane)`
    `void` | `installUI(JComponent c)` Configures the specified component appropriately for the look and feel.
    `protected void` | `uninstallListeners(JComponent c)`
    `void` | `uninstallListeners(JScrollPane scrollPane)` Deprecated. - Replaced by `uninstallListeners(JComponent)`
    `void` | `uninstallUI(JComponent c)` Reverses configuration which was done on the specified component during `installUI`.

    - ### Methods inherited from class javax.swing.plaf.basic.BasicScrollPaneUI

      `createHSBChangeListener, createMouseWheelListener, createPropertyChangeListener, createViewportChangeListener, createVSBChangeListener, getBaseline, getBaselineResizeBehavior, getMaximumSize, installDefaults, installKeyboardActions, paint, syncScrollPaneWithViewport, uninstallDefaults, uninstallKeyboardActions, updateColumnHeader, updateRowHeader, updateScrollBarDisplayPolicy, updateViewport`

    - ### Methods inherited from class javax.swing.plaf.ComponentUI

      `contains, getAccessibleChild, getAccessibleChildrenCount, getMinimumSize, getPreferredSize, update`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### MetalScrollPaneUI

          public MetalScrollPaneUI()

  - ### Method Detail

    - #### createUI

          public static ComponentUI createUI(JComponent x)

    - #### installUI

          public void installUI(JComponent c)

      Description copied from class: `ComponentUI`
      Configures the specified component appropriately for the look and feel. This method is invoked when the `ComponentUI` instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:
      1. Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
      2. Install a `LayoutManager` on the component if necessary.
      3. Create/add any required sub-components to the component.
      4. Create/install event listeners on the component.
      5. Create/install a `PropertyChangeListener` on the component in order to detect and respond to component property changes appropriately.
      6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
      7. Initialize any appropriate instance data.
      Overrides:
        `installUI` in class `BasicScrollPaneUI`
      Parameters:
        `c` - the component where this UI delegate is being installed
      See Also:
        `ComponentUI.uninstallUI(javax.swing.JComponent)`, `JComponent.setUI(javax.swing.plaf.ComponentUI)`, `JComponent.updateUI()`

    - #### uninstallUI

          public void uninstallUI(JComponent c)

      Description copied from class: `ComponentUI`
      Reverses configuration which was done on the specified component during `installUI`. This method is invoked when this `UIComponent` instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in `installUI`, being careful to leave the `JComponent` instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:
      1. Remove any UI-set borders from the component.
      2. Remove any UI-set layout managers on the component.
      3. Remove any UI-added sub-components from the component.
      4. Remove any UI-added event/property listeners from the component.
      5. Remove any UI-installed keyboard UI from the component.
      6. Nullify any allocated instance data objects to allow for GC.
      Overrides:
        `uninstallUI` in class `BasicScrollPaneUI`
      Parameters:
        `c` - the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
      See Also:
        `ComponentUI.installUI(javax.swing.JComponent)`, `JComponent.updateUI()`

    - #### installListeners

          public void installListeners(JScrollPane scrollPane)

      Overrides:
        `installListeners` in class `BasicScrollPaneUI`

    - #### uninstallListeners

          protected void uninstallListeners(JComponent c)

      Overrides:
        `uninstallListeners` in class `BasicScrollPaneUI`

    - #### uninstallListeners

          @Deprecated
          public void uninstallListeners(JScrollPane scrollPane)

      Deprecated. - Replaced by `uninstallListeners(JComponent)`

    - #### createScrollBarSwapListener

          protected PropertyChangeListener createScrollBarSwapListener()

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2026, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.