Java java.awt Class MenuComponent（JDK8）

Constructor Detail

• MenuComponent

  public MenuComponent()
                throws HeadlessException

  Creates a MenuComponent.

  Throws:

  HeadlessException - if GraphicsEnvironment.isHeadless returns true

  See Also:

  GraphicsEnvironment.isHeadless()

Method Detail

• getName

  public String getName()

  Gets the name of the menu component.

  Returns:

  the name of the menu component

  Since:

  JDK1.1

  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:

  JDK1.1

  See Also:

  getName()

• getParent

  public MenuContainer 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

• getPeer

  @Deprecated
  public java.awt.peer.MenuComponentPeer getPeer()

  Deprecated. As of JDK version 1.1, programs should not directly manipulate peers.

• getFont

  public Font 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)

  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 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

  @Deprecated
  public boolean postEvent(Event evt)

  Deprecated. As of JDK version 1.1, replaced by dispatchEvent.
  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

• dispatchEvent

  public final void dispatchEvent(AWTEvent e)

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

  Parameters:

  e - the event

• processEvent

  protected void processEvent(AWTEvent e)

  Processes events occurring on this menu component.

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

  Parameters:

  e - the event

  Since:

  JDK1.1

• 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

  public String 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

  public AccessibleContext 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