MetalMenuBarUI (Java SE 14 & JDK 14)
Description: declaration: module: java.desktop, package: javax.swing.plaf.metal, class: MetalMenuBarUI
Keywords: javax.swing.plaf.metal.MetalMenuBarUI class

Module java.desktop
Package javax.swing.plaf.metal

# Class MetalMenuBarUI

java.lang.Object
javax.swing.plaf.ComponentUI
javax.swing.plaf.MenuBarUI
javax.swing.plaf.basic.BasicMenuBarUI
javax.swing.plaf.metal.MetalMenuBarUI

    public class MetalMenuBarUI
    extends BasicMenuBarUI

Metal implementation of `MenuBarUI`. This class is responsible for providing the metal look and feel for `JMenuBar`s.

Since:
  1.5
See Also:
  `MenuBarUI`

- ## Field Summary

  ### Fields declared in class javax.swing.plaf.basic.BasicMenuBarUI

  `changeListener, containerListener, menuBar`

- ## Constructor Summary

  Constructors
  Constructor | Description
  --- | ---
  `MetalMenuBarUI()` |

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `static ComponentUI` | `createUI​(JComponent x)` | Creates the `ComponentUI` implementation for the passed in component.
  `void` | `installUI​(JComponent c)` | Configures the specified component appropriate for the metal look and feel.
  `void` | `uninstallUI​(JComponent c)` | Reverses configuration which was done on the specified component during `installUI`.
  `void` | `update​(Graphics g, JComponent c)` | If necessary paints the background of the component, then invokes `paint`.

  ### Methods declared in class javax.swing.plaf.basic.BasicMenuBarUI

  `createChangeListener, createContainerListener, installDefaults, installKeyboardActions, installListeners, uninstallDefaults, uninstallKeyboardActions, uninstallListeners`

  ### Methods declared in class javax.swing.plaf.ComponentUI

  `contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint`

  ### Methods declared in class java.lang.Object

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

- ## Constructor Details

  - ### MetalMenuBarUI

    public MetalMenuBarUI()

- ## Method Details

  - ### createUI

    public static ComponentUI createUI​(JComponent x)
    Creates the `ComponentUI` implementation for the passed in component.
    Parameters:
      `x` - JComponent to create the ComponentUI implementation for
    Returns:
      ComponentUI implementation for `x`
    Throws:
      `NullPointerException` - if `x` is null

  - ### installUI

    public void installUI​(JComponent c)
    Configures the specified component appropriate for the metal look and feel.
    Overrides:
      `installUI` in class `ComponentUI`
    Parameters:
      `c` - the component where this UI delegate is being installed
    Throws:
      `NullPointerException` - if `c` is null.
    See Also:
      `ComponentUI.uninstallUI(javax.swing.JComponent)`, `JComponent.setUI(javax.swing.plaf.ComponentUI)`, `JComponent.updateUI()`

  - ### uninstallUI

    public void uninstallUI​(JComponent c)
    Reverses configuration which was done on the specified component during `installUI`.
    Overrides:
      `uninstallUI` in class `ComponentUI`
    Parameters:
      `c` - the component where this UI delegate is being installed
    Throws:
      `NullPointerException` - if `c` is null.
    See Also:
      `ComponentUI.installUI(javax.swing.JComponent)`, `JComponent.updateUI()`

  - ### update

    public void update​(Graphics g, JComponent c)
    If necessary paints the background of the component, then invokes `paint`.
    Overrides:
      `update` in class `ComponentUI`
    Parameters:
      `g` - Graphics to paint to
      `c` - JComponent painting on
    Throws:
      `NullPointerException` - if `g` or `c` is null
    Since:
      1.5
    See Also:
      `ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)`, `ComponentUI.paint(java.awt.Graphics, javax.swing.JComponent)`