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

# Class BasicMenuBarUI

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

Direct Known Subclasses:
  `MetalMenuBarUI`, `SynthMenuBarUI`

public class BasicMenuBarUI extends MenuBarUI
A default L&F implementation of MenuBarUI. This implementation is a "combined" view/controller.

## Field Summary

Fields
Modifier and Type
Field
Description
`protected ChangeListener`
`changeListener`
The instance of `ChangeListener`.
`protected ContainerListener`
`containerListener`
The instance of `ContainerListener`.
`protected JMenuBar`
`menuBar`
The instance of `JMenuBar`.

## Constructor Summary

Constructors
Constructor
Description
`BasicMenuBarUI()`
Constructs a `BasicMenuBarUI`.

## Method Summary

Modifier and Type
Method
Description
`protected ChangeListener`
`createChangeListener()`
Returns an instance of `ChangeListener`.
`protected ContainerListener`
`createContainerListener()`
Returns an instance of `ContainerListener`.
`static ComponentUI`
`createUI(JComponent x)`
Returns a new instance of `BasicMenuBarUI`.
`protected void`
`installDefaults()`
Installs default properties.
`protected void`
`installKeyboardActions()`
Registers keyboard actions.
`protected void`
`installListeners()`
Registers listeners.
`protected void`
`uninstallDefaults()`
Uninstalls default properties.
`protected void`
`uninstallKeyboardActions()`
Unregisters keyboard actions.
`protected void`
`uninstallListeners()`
Unregisters listeners.

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

`contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update`

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

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

## Field Details

### menuBar

protected JMenuBar menuBar
The instance of `JMenuBar`.

### containerListener

protected ContainerListener containerListener
The instance of `ContainerListener`.

### changeListener

protected ChangeListener changeListener
The instance of `ChangeListener`.

## Constructor Details

### BasicMenuBarUI

public BasicMenuBarUI()
Constructs a `BasicMenuBarUI`.

## Method Details

### createUI

public static ComponentUI createUI(JComponent x)
Returns a new instance of `BasicMenuBarUI`.

Parameters:
  `x` - a component
Returns:
  a new instance of `BasicMenuBarUI`

### installDefaults

protected void installDefaults()
Installs default properties.

### installListeners

protected void installListeners()
Registers listeners.

### installKeyboardActions

protected void installKeyboardActions()
Registers keyboard actions.

### uninstallDefaults

protected void uninstallDefaults()
Uninstalls default properties.

### uninstallListeners

protected void uninstallListeners()
Unregisters listeners.

### uninstallKeyboardActions

protected void uninstallKeyboardActions()
Unregisters keyboard actions.

### createContainerListener

protected ContainerListener createContainerListener()
Returns an instance of `ContainerListener`.

Returns:
  an instance of `ContainerListener`

### createChangeListener

protected ChangeListener createChangeListener()
Returns an instance of `ChangeListener`.

Returns:
  an instance of `ChangeListener`