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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/MenuComponent.html below:

MenuComponent (Java SE 19 & JDK 19)

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

MenuBar, MenuItem

The abstract class

is the superclass of all menu-related components. In this respect, the class

is analogous to the abstract superclass

for AWT components.

Menu components receive and process AWT events, just as components do, through the method processEvent.

Since:

1.0

See Also:

• Serialized Form

• Nested Class Summary

  Nested Classes

  protected class 

  Inner class of MenuComponent used to provide default support for accessibility.

• Constructor Summary

  Constructors

• Method Summary

  final void

  Delivers an event to this component or one of its sub components.

  Gets the AccessibleContext associated with this MenuComponent.

  Gets the font used for this menu component.

  Gets the name of the menu component.

  Returns the parent container for this menu component.

  Gets this component's locking object (the object that owns the thread synchronization monitor) for AWT component-tree and layout operations.

  Returns a string representing the state of this MenuComponent.

  boolean

  protected void

  Processes events occurring on this menu component.

  void

  Removes the menu component's peer.

  void

  Sets the font to be used for this menu component to the specified font.

  void

  Sets the name of the component to the specified string.

  Returns a representation of this menu component as a string.

• Constructor Details
  • MenuComponent

    Creates a MenuComponent.

    Throws:

    HeadlessException - if GraphicsEnvironment.isHeadless returns true

    See Also:

    • GraphicsEnvironment.isHeadless()

• Method Details
  • getName

    Gets the name of the menu component.

    Returns:

    the name of the menu component

    Since:

    1.1

    See Also:

    • setName(java.lang.String)

  • setName public 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()

  • getParent

    Returns the parent container for this menu component.

    Returns:

    the menu component containing this menu component, or null if this menu component is the outermost component, the menu bar itself

  • getFont

    Gets the font used for this menu component.

    Returns:

    the font used in this menu component, if there is one; null otherwise

    See Also:

    • setFont(java.awt.Font)

  • setFont public void setFont(Font f)

    Some platforms may not support setting of all font attributes of a menu component; in such cases, calling setFont will 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

  • removeNotify

    public 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.

  • postEvent

    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

  • dispatchEvent public final void dispatchEvent(AWTEvent e)

    Delivers an event to this component or one of its sub components.

    Parameters:

    e - the event

  • processEvent

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

    Parameters:

    e - the event

    Since:

    1.1

  • paramString protected String paramString

    ()

    Returns a string representing the state of this MenuComponent. 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 be null.

    Returns:

    the parameter string of this menu component

  • toString

    Returns a representation of this menu component as a string.

    Overrides:

    toString in class Object

    Returns:

    a string representation of this menu component

  • getTreeLock protected 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

  • getAccessibleContext

    Gets the AccessibleContext associated with this MenuComponent. The method implemented by this base class returns null. Classes that extend MenuComponent should implement this method to return the AccessibleContext associated with the subclass.

    Returns:

    the AccessibleContext of this MenuComponent

    Since:

    1.3

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