- java.lang.Object
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- java.awt.MenuComponent
 
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- All Implemented Interfaces:
- Serializable
 
 public abstract class MenuComponent extends Object implements Serializable The abstract classMenuComponentis the superclass of all menu-related components. In this respect, the classMenuComponentis analogous to the abstract superclassComponentfor AWT components.Menu components receive and process AWT events, just as components do, through the method processEvent.- Since:
- 1.0
- See Also:
- Serialized Form
 
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Nested Class SummaryNested Classes Modifier and Type Class Description protected classMenuComponent.AccessibleAWTMenuComponentInner class ofMenuComponentused to provide default support for accessibility.
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Constructor SummaryConstructors Constructor Description MenuComponent()Creates aMenuComponent.
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Method SummaryAll Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voiddispatchEvent(AWTEvent e)Delivers an event to this component or one of its sub components.AccessibleContextgetAccessibleContext()Gets theAccessibleContextassociated with thisMenuComponent.FontgetFont()Gets the font used for this menu component.StringgetName()Gets the name of the menu component.MenuContainergetParent()Returns the parent container for this menu component.protected ObjectgetTreeLock()Gets this component's locking object (the object that owns the thread synchronization monitor) for AWT component-tree and layout operations.protected StringparamString()Returns a string representing the state of thisMenuComponent.booleanpostEvent(Event evt)Deprecated.As of JDK version 1.1, replaced bydispatchEvent.protected voidprocessEvent(AWTEvent e)Processes events occurring on this menu component.voidremoveNotify()Removes the menu component's peer.voidsetFont(Font f)Sets the font to be used for this menu component to the specified font.voidsetName(String name)Sets the name of the component to the specified string.StringtoString()Returns a representation of this menu component as a string.
 
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Constructor Detail- 
MenuComponentpublic MenuComponent() throws HeadlessExceptionCreates aMenuComponent.- Throws:
- HeadlessException- if- GraphicsEnvironment.isHeadlessreturns- true
- See Also:
- GraphicsEnvironment.isHeadless()
 
 
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Method Detail- 
getNamepublic String getName() Gets the name of the menu component.- Returns:
- the name of the menu component
- Since:
- 1.1
- See Also:
- setName(java.lang.String)
 
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setNamepublic void setName(String name) Sets the name of the component to the specified string.- Parameters:
- name- the name of the menu component
- Since:
- 1.1
- See Also:
- getName()
 
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getParentpublic MenuContainer getParent() Returns the parent container for this menu component.- Returns:
- the menu component containing this menu component,
                 or nullif this menu component is the outermost component, the menu bar itself
 
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getFontpublic Font getFont() Gets the font used for this menu component.- Returns:
- the font used in this menu component, if there is one;
                  nullotherwise
- See Also:
- setFont(java.awt.Font)
 
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setFontpublic void setFont(Font f) Sets the font to be used for this menu component to the specified font. This font is also used by all subcomponents of this menu component, unless those subcomponents specify a different font.Some platforms may not support setting of all font attributes of a menu component; in such cases, calling setFontwill have no effect on the unsupported font attributes of this menu component. Unless subcomponents of this menu component specify a different font, this font will be used by those subcomponents if supported by the underlying platform.- Parameters:
- f- the font to be set
- See Also:
- getFont(),- Font.getAttributes(),- TextAttribute
 
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removeNotifypublic void removeNotify() Removes the menu component's peer. The peer allows us to modify the appearance of the menu component without changing the functionality of the menu component.
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postEvent@Deprecated public boolean postEvent(Event evt) Deprecated.As of JDK version 1.1, replaced bydispatchEvent.Posts the specified event to the menu. This method is part of the Java 1.0 event system and it is maintained only for backwards compatibility. Its use is discouraged, and it may not be supported in the future.- Parameters:
- evt- the event which is to take place
- Returns:
- unconditionally returns false
 
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dispatchEventpublic final void dispatchEvent(AWTEvent e) Delivers an event to this component or one of its sub components.- Parameters:
- e- the event
 
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processEventprotected void processEvent(AWTEvent e) Processes events occurring on this menu component.Note that if the event parameter is nullthe behavior is unspecified and may result in an exception.- Parameters:
- e- the event
- Since:
- 1.1
 
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paramStringprotected String paramString() Returns a string representing the state of thisMenuComponent. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not benull.- Returns:
- the parameter string of this menu component
 
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toStringpublic String toString() Returns a representation of this menu component as a string.
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getTreeLockprotected final Object getTreeLock() Gets this component's locking object (the object that owns the thread synchronization monitor) for AWT component-tree and layout operations.- Returns:
- this component's locking object
 
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getAccessibleContextpublic AccessibleContext getAccessibleContext() Gets theAccessibleContextassociated with thisMenuComponent. The method implemented by this base class returnsnull. Classes that extendMenuComponentshould implement this method to return theAccessibleContextassociated with the subclass.- Returns:
- the AccessibleContextof thisMenuComponent
- Since:
- 1.3
 
 
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