# Class JPopupMenu

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPopupMenu

All Implemented Interfaces:
  `ImageObserver, MenuContainer, Serializable, Accessible, MenuElement`

Direct Known Subclasses:
  `BasicComboPopup`

@JavaBean(defaultProperty="UI", description="A small window that pops up and displays a series of choices.") public class JPopupMenu extends JComponent implements Accessible, MenuElement
An implementation of a popup menu -- a small window that pops up and displays a series of choices. A `JPopupMenu` is used for the menu that appears when the user selects an item on the menu bar. It is also used for "pull-right" menu that appears when the selects a menu item that activates it. Finally, a `JPopupMenu` can also be used anywhere else you want a menu to appear. For example, when the user right-clicks in a specified area.

For information and examples of using popup menus, see How to Use Menus in The Java Tutorial.

Warning: Swing is not thread safe. For more information see Swing's Threading Policy.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the `java.beans` package. Please see `XMLEncoder`.

Since:
  1.2

- ## Nested Class Summary

  Nested Classes
  Modifier and Type
  Class
  Description
  `protected class`
  `JPopupMenu.AccessibleJPopupMenu`
  This class implements accessibility support for the `JPopupMenu` class.
  `static class`
  `JPopupMenu.Separator`
  A popup menu-specific separator.

  ### Nested classes/interfaces declared in class JComponent

  `JComponent.AccessibleJComponent`

  ### Nested classes/interfaces declared in class Container

  `Container.AccessibleAWTContainer`

  ### Nested classes/interfaces declared in class Component

  `Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy`

- ## Field Summary

  ### Fields declared in class JComponent

  `listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

  ### Fields declared in class Component

  `accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

  ### Fields declared in interface ImageObserver

  `ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `JPopupMenu()`
  Constructs a `JPopupMenu` without an "invoker".
  `JPopupMenu(String label)`
  Constructs a `JPopupMenu` with the specified title.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `JMenuItem`
  `add(String s)`
  Creates a new menu item with the specified text and appends it to the end of this menu.
  `JMenuItem`
  `add(Action a)`
  Appends a new menu item to the end of the menu which dispatches the specified `Action` object.
  `JMenuItem`
  `add(JMenuItem menuItem)`
  Appends the specified menu item to the end of this menu.
  `void`
  `addMenuKeyListener(MenuKeyListener l)`
  Adds a `MenuKeyListener` to the popup menu.
  `void`
  `addPopupMenuListener(PopupMenuListener l)`
  Adds a `PopupMenu` listener.
  `void`
  `addSeparator()`
  Appends a new separator at the end of the menu.
  `protected PropertyChangeListener`
  `createActionChangeListener(JMenuItem b)`
  Returns a properly configured `PropertyChangeListener` which updates the control as changes to the `Action` occur.
  `protected JMenuItem`
  `createActionComponent(Action a)`
  Factory method which creates the `JMenuItem` for `Actions` added to the `JPopupMenu`.
  `protected void`
  `firePopupMenuCanceled()`
  Notifies `PopupMenuListeners` that this popup menu is cancelled.
  `protected void`
  `firePopupMenuWillBecomeInvisible()`
  Notifies `PopupMenuListener`s that this popup menu will become invisible.
  `protected void`
  `firePopupMenuWillBecomeVisible()`
  Notifies `PopupMenuListener`s that this popup menu will become visible.
  `AccessibleContext`
  `getAccessibleContext()`
  Gets the AccessibleContext associated with this JPopupMenu.
  `Component`
  `getComponent()`
  Returns this `JPopupMenu` component.
  `Component`
  `getComponentAtIndex(int i)`
  Deprecated.
  replaced by `Container.getComponent(int)`
  `int`
  `getComponentIndex(Component c)`
  Returns the index of the specified component.
  `static boolean`
  `getDefaultLightWeightPopupEnabled()`
  Gets the `defaultLightWeightPopupEnabled` property, which by default is `true`.
  `Component`
  `getInvoker()`
  Returns the component which is the 'invoker' of this popup menu.
  `String`
  `getLabel()`
  Returns the popup menu's label
  `Insets`
  `getMargin()`
  Returns the margin, in pixels, between the popup menu's border and its containers.
  `MenuKeyListener[]`
  `getMenuKeyListeners()`
  Returns an array of all the `MenuKeyListener`s added to this JPopupMenu with addMenuKeyListener().
  `PopupMenuListener[]`
  `getPopupMenuListeners()`
  Returns an array of all the `PopupMenuListener`s added to this JMenuItem with addPopupMenuListener().
  `SingleSelectionModel`
  `getSelectionModel()`
  Returns the model object that handles single selections.
  `MenuElement[]`
  `getSubElements()`
  Returns an array of `MenuElement`s containing the submenu for this menu component.
  `PopupMenuUI`
  `getUI()`
  Returns the look and feel (L&F) object that renders this component.
  `String`
  `getUIClassID()`
  Returns the name of the L&F class that renders this component.
  `void`
  `insert(Component component, int index)`
  Inserts the specified component into the menu at a given position.
  `void`
  `insert(Action a, int index)`
  Inserts a menu item for the specified `Action` object at a given position.
  `boolean`
  `isBorderPainted()`
  Checks whether the border should be painted.
  `boolean`
  `isLightWeightPopupEnabled()`
  Gets the `lightWeightPopupEnabled` property.
  `boolean`
  `isPopupTrigger(MouseEvent e)`
  Returns true if the `MouseEvent` is considered a popup trigger by the `JPopupMenu`'s currently installed UI.
  `boolean`
  `isVisible()`
  Returns true if the popup menu is visible (currently being displayed).
  `void`
  `menuSelectionChanged(boolean isIncluded)`
  Messaged when the menubar selection changes to activate or deactivate this menu.
  `void`
  `pack()`
  Lays out the container so that it uses the minimum space needed to display its contents.
  `protected void`
  `paintBorder(Graphics g)`
  Paints the popup menu's border if the `borderPainted` property is `true`.
  `protected String`
  `paramString()`
  Returns a string representation of this `JPopupMenu`.
  `protected void`
  `processKeyEvent(KeyEvent evt)`
  Processes key stroke events such as mnemonics and accelerators.
  `void`
  `processKeyEvent(KeyEvent e, MenuElement[] path, MenuSelectionManager manager)`
  Processes a key event forwarded from the `MenuSelectionManager` and changes the menu selection, if necessary, by using `MenuSelectionManager`'s API.
  `void`
  `processMouseEvent(MouseEvent event, MenuElement[] path, MenuSelectionManager manager)`
  This method is required to conform to the `MenuElement` interface, but it not implemented.
  `void`
  `remove(int pos)`
  Removes the component at the specified index from this popup menu.
  `void`
  `removeMenuKeyListener(MenuKeyListener l)`
  Removes a `MenuKeyListener` from the popup menu.
  `void`
  `removePopupMenuListener(PopupMenuListener l)`
  Removes a `PopupMenu` listener.
  `void`
  `setBorderPainted(boolean b)`
  Sets whether the border should be painted.
  `static void`
  `setDefaultLightWeightPopupEnabled(boolean aFlag)`
  Sets the default value of the `lightWeightPopupEnabled` property.
  `void`
  `setInvoker(Component invoker)`
  Sets the invoker of this popup menu -- the component in which the popup menu is to be displayed.
  `void`
  `setLabel(String label)`
  Sets the popup menu's label.
  `void`
  `setLightWeightPopupEnabled(boolean aFlag)`
  Sets the value of the `lightWeightPopupEnabled` property, which by default is `true`.
  `void`
  `setLocation(int x, int y)`
  Sets the location of the upper left corner of the popup menu using x, y coordinates.
  `void`
  `setPopupSize(int width, int height)`
  Sets the size of the Popup window to the specified width and height.
  `void`
  `setPopupSize(Dimension d)`
  Sets the size of the Popup window using a `Dimension` object.
  `void`
  `setSelected(Component sel)`
  Sets the currently selected component, This will result in a change to the selection model.
  `void`
  `setSelectionModel(SingleSelectionModel model)`
  Sets the model object to handle single selections.
  `void`
  `setUI(PopupMenuUI ui)`
  Sets the L&F object that renders this component.
  `void`
  `setVisible(boolean b)`
  Sets the visibility of the popup menu.
  `void`
  `show(Component invoker, int x, int y)`
  Displays the popup menu at the position x,y in the coordinate space of the component invoker.
  `void`
  `updateUI()`
  Resets the UI property to a value from the current look and feel.

  ### Methods declared in class JComponent

  `addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, unregisterKeyboardAction, update`

  ### Methods declared in class Container

  `add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree`

  ### Methods declared in class Component

  `action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle`

  ### Methods declared in class Object

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

- ## Constructor Details

  - ### JPopupMenu

    public JPopupMenu()
    Constructs a `JPopupMenu` without an "invoker".

  - ### JPopupMenu

    public JPopupMenu(String label)
    Constructs a `JPopupMenu` with the specified title.
    Parameters:
      `label` - the string that a UI may use to display as a title for the popup menu.

- ## Method Details

  - ### setDefaultLightWeightPopupEnabled

    public static void setDefaultLightWeightPopupEnabled(boolean aFlag)
    Sets the default value of the `lightWeightPopupEnabled` property.
    Parameters:
      `aFlag` - `true` if popups can be lightweight, otherwise `false`
    See Also:
      - `getDefaultLightWeightPopupEnabled()`
      - `setLightWeightPopupEnabled(boolean)`

  - ### getDefaultLightWeightPopupEnabled

    public static boolean getDefaultLightWeightPopupEnabled()
    Gets the `defaultLightWeightPopupEnabled` property, which by default is `true`.
    Returns:
      the value of the `defaultLightWeightPopupEnabled` property
    See Also:
      - `setDefaultLightWeightPopupEnabled(boolean)`

  - ### getUI

    public PopupMenuUI getUI()
    Returns the look and feel (L&F) object that renders this component.
    Overrides:
      `getUI` in class `JComponent`
    Returns:
      the `PopupMenuUI` object that renders this component

  - ### setUI

    @BeanProperty(hidden=true, visualUpdate=true, description="The UI object that implements the Component's LookAndFeel.") public void setUI(PopupMenuUI ui)
    Sets the L&F object that renders this component.
    Parameters:
      `ui` - the new `PopupMenuUI` L&F object
    See Also:
      - `UIDefaults.getUI(JComponent)`

  - ### updateUI

    public void updateUI()
    Resets the UI property to a value from the current look and feel.
    Overrides:
      `updateUI` in class `JComponent`
    See Also:
      - `JComponent.updateUI()`

  - ### getUIClassID

    @BeanProperty(bound=false) public String getUIClassID()
    Returns the name of the L&F class that renders this component.
    Overrides:
      `getUIClassID` in class `JComponent`
    Returns:
      the string "PopupMenuUI"
    See Also:
      - `JComponent.getUIClassID()`
      - `UIDefaults.getUI(JComponent)`

  - ### processKeyEvent

    protected void processKeyEvent(KeyEvent evt)
    Processes key stroke events such as mnemonics and accelerators.
    Overrides:
      `processKeyEvent` in class `JComponent`
    Parameters:
      `evt` - the key event to be processed
    See Also:
      - `KeyEvent`
      - `KeyListener`
      - `KeyboardFocusManager`
      - `DefaultKeyboardFocusManager`
      - `Component.processEvent(AWTEvent)`
      - `Component.dispatchEvent(AWTEvent)`
      - `Component.addKeyListener(KeyListener)`
      - `Component.enableEvents(long)`
      - `Component.isShowing()`

  - ### getSelectionModel

    public SingleSelectionModel getSelectionModel()
    Returns the model object that handles single selections.
    Returns:
      the `selectionModel` property
    See Also:
      - `SingleSelectionModel`

  - ### setSelectionModel

    @BeanProperty(bound=false, expert=true, description="The selection model for the popup menu") public void setSelectionModel(SingleSelectionModel model)
    Sets the model object to handle single selections.
    Parameters:
      `model` - the new `SingleSelectionModel`
    See Also:
      - `SingleSelectionModel`

  - ### add

    public JMenuItem add(JMenuItem menuItem)
    Appends the specified menu item to the end of this menu.
    Parameters:
      `menuItem` - the `JMenuItem` to add
    Returns:
      the `JMenuItem` added

  - ### add

    public JMenuItem add(String s)
    Creates a new menu item with the specified text and appends it to the end of this menu.
    Parameters:
      `s` - the string for the menu item to be added
    Returns:
      a new `JMenuItem` created using `s`

  - ### add

    public JMenuItem add(Action a)
    Appends a new menu item to the end of the menu which dispatches the specified `Action` object.
    Parameters:
      `a` - the `Action` to add to the menu
    Returns:
      the new menu item
    See Also:
      - `Action`

  - ### createActionComponent

    protected JMenuItem createActionComponent(Action a)
    Factory method which creates the `JMenuItem` for `Actions` added to the `JPopupMenu`.
    Parameters:
      `a` - the `Action` for the menu item to be added
    Returns:
      the new menu item
    Since:
      1.3
    See Also:
      - `Action`

  - ### createActionChangeListener

    protected PropertyChangeListener createActionChangeListener(JMenuItem b)
    Returns a properly configured `PropertyChangeListener` which updates the control as changes to the `Action` occur.
    Parameters:
      `b` - the menu item for which to create a listener
    Returns:
      a properly configured `PropertyChangeListener`

  - ### remove

    public void remove(int pos)
    Removes the component at the specified index from this popup menu.
    Overrides:
      `remove` in class `Container`
    Parameters:
      `pos` - the position of the item to be removed
    Throws:
      `IllegalArgumentException` - if the value of `pos` < 0, or if the value of `pos` is greater than the number of items
    See Also:
      - `Container.add(Component)`
      - `Container.invalidate()`
      - `Container.validate()`
      - `Container.getComponentCount()`

  - ### setLightWeightPopupEnabled

    @BeanProperty(bound=false, expert=true, description="Determines whether lightweight popups are used when possible") public void setLightWeightPopupEnabled(boolean aFlag)
    Sets the value of the `lightWeightPopupEnabled` property, which by default is `true`. By default, when a look and feel displays a popup, it can choose to use a lightweight (all-Java) popup. Lightweight popup windows are more efficient than heavyweight (native peer) windows, but lightweight and heavyweight components do not mix well in a GUI. If your application mixes lightweight and heavyweight components, you should disable lightweight popups. Some look and feels might always use heavyweight popups, no matter what the value of this property.
    Parameters:
      `aFlag` - `false` to disable lightweight popups
    See Also:
      - `isLightWeightPopupEnabled()`

  - ### isLightWeightPopupEnabled

    public boolean isLightWeightPopupEnabled()
    Gets the `lightWeightPopupEnabled` property.
    Returns:
      the value of the `lightWeightPopupEnabled` property
    See Also:
      - `setLightWeightPopupEnabled(boolean)`

  - ### getLabel

    public String getLabel()
    Returns the popup menu's label
    Returns:
      a string containing the popup menu's label
    See Also:
      - `setLabel(String)`

  - ### setLabel

    @BeanProperty(description="The label for the popup menu.") public void setLabel(String label)
    Sets the popup menu's label. Different look and feels may choose to display or not display this.
    Parameters:
      `label` - a string specifying the label for the popup menu
    See Also:
      - `getLabel()`

  - ### addSeparator

    public void addSeparator()
    Appends a new separator at the end of the menu.

  - ### insert

    public void insert(Action a, int index)
    Inserts a menu item for the specified `Action` object at a given position.
    Parameters:
      `a` - the `Action` object to insert
      `index` - specifies the position at which to insert the `Action`, where 0 is the first
    Throws:
      `IllegalArgumentException` - if `index` < 0
    See Also:
      - `Action`

  - ### insert

    public void insert(Component component, int index)
    Inserts the specified component into the menu at a given position.
    Parameters:
      `component` - the `Component` to insert
      `index` - specifies the position at which to insert the component, where 0 is the first
    Throws:
      `IllegalArgumentException` - if `index` < 0

  - ### addPopupMenuListener

    public void addPopupMenuListener(PopupMenuListener l)
    Adds a `PopupMenu` listener.
    Parameters:
      `l` - the `PopupMenuListener` to add

  - ### removePopupMenuListener

    public void removePopupMenuListener(PopupMenuListener l)
    Removes a `PopupMenu` listener.
    Parameters:
      `l` - the `PopupMenuListener` to remove

  - ### getPopupMenuListeners

    @BeanProperty(bound=false) public PopupMenuListener[] getPopupMenuListeners()
    Returns an array of all the `PopupMenuListener`s added to this JMenuItem with addPopupMenuListener().
    Returns:
      all of the `PopupMenuListener`s added or an empty array if no listeners have been added
    Since:
      1.4

  - ### addMenuKeyListener

    public void addMenuKeyListener(MenuKeyListener l)
    Adds a `MenuKeyListener` to the popup menu.
    Parameters:
      `l` - the `MenuKeyListener` to be added
    Since:
      1.5

  - ### removeMenuKeyListener

    public void removeMenuKeyListener(MenuKeyListener l)
    Removes a `MenuKeyListener` from the popup menu.
    Parameters:
      `l` - the `MenuKeyListener` to be removed
    Since:
      1.5

  - ### getMenuKeyListeners

    @BeanProperty(bound=false) public MenuKeyListener[] getMenuKeyListeners()
    Returns an array of all the `MenuKeyListener`s added to this JPopupMenu with addMenuKeyListener().
    Returns:
      all of the `MenuKeyListener`s added or an empty array if no listeners have been added
    Since:
      1.5

  - ### firePopupMenuWillBecomeVisible

    protected void firePopupMenuWillBecomeVisible()
    Notifies `PopupMenuListener`s that this popup menu will become visible.

  - ### firePopupMenuWillBecomeInvisible

    protected void firePopupMenuWillBecomeInvisible()
    Notifies `PopupMenuListener`s that this popup menu will become invisible.

  - ### firePopupMenuCanceled

    protected void firePopupMenuCanceled()
    Notifies `PopupMenuListeners` that this popup menu is cancelled.

  - ### pack

    public void pack()
    Lays out the container so that it uses the minimum space needed to display its contents.

  - ### setVisible

    @BeanProperty(description="Makes the popup visible") public void setVisible(boolean b)
    Sets the visibility of the popup menu.
    Overrides:
      `setVisible` in class `JComponent`
    Parameters:
      `b` - true to make the popup visible, or false to hide it
    See Also:
      - `Component.isVisible()`
      - `Component.invalidate()`

  - ### isVisible

    public boolean isVisible()
    Returns true if the popup menu is visible (currently being displayed).
    Overrides:
      `isVisible` in class `Component`
    Returns:
      `true` if the component is visible, `false` otherwise
    See Also:
      - `Component.setVisible(boolean)`

  - ### setLocation

    @BeanProperty(description="The location of the popup menu.") public void setLocation(int x, int y)
    Sets the location of the upper left corner of the popup menu using x, y coordinates.

    The method changes the geometry-related data. Therefore, the native windowing system may ignore such requests, or it may modify the requested data, so that the `JPopupMenu` object is placed and sized in a way that corresponds closely to the desktop settings.

    Overrides:
      `setLocation` in class `Component`
    Parameters:
      `x` - the x coordinate of the popup's new position in the screen's coordinate space
      `y` - the y coordinate of the popup's new position in the screen's coordinate space
    See Also:
      - `Component.getLocation()`
      - `Component.setBounds(int, int, int, int)`
      - `Component.invalidate()`

  - ### getInvoker

    public Component getInvoker()
    Returns the component which is the 'invoker' of this popup menu.
    Returns:
      the `Component` in which the popup menu is displayed

  - ### setInvoker

    @BeanProperty(bound=false, expert=true, description="The invoking component for the popup menu") public void setInvoker(Component invoker)
    Sets the invoker of this popup menu -- the component in which the popup menu is to be displayed.
    Parameters:
      `invoker` - the `Component` in which the popup menu is displayed

  - ### show

    public void show(Component invoker, int x, int y)
    Displays the popup menu at the position x,y in the coordinate space of the component invoker.
    Parameters:
      `invoker` - the component in whose space the popup menu is to appear
      `x` - the x coordinate in invoker's coordinate space at which the popup menu is to be displayed
      `y` - the y coordinate in invoker's coordinate space at which the popup menu is to be displayed

  - ### getComponentAtIndex

    @Deprecated public Component getComponentAtIndex(int i)
    Deprecated.
    replaced by `Container.getComponent(int)`
    Returns the component at the specified index.
    Parameters:
      `i` - the index of the component, where 0 is the first
    Returns:
      the `Component` at that index

  - ### getComponentIndex

    public int getComponentIndex(Component c)
    Returns the index of the specified component.
    Parameters:
      `c` - the `Component` to find
    Returns:
      the index of the component, where 0 is the first; or -1 if the component is not found

  - ### setPopupSize

    @BeanProperty(description="The size of the popup menu") public void setPopupSize(Dimension d)
    Sets the size of the Popup window using a `Dimension` object. This is equivalent to `setPreferredSize(d)`.
    Parameters:
      `d` - the `Dimension` specifying the new size of this component.

  - ### setPopupSize

    @BeanProperty(description="The size of the popup menu") public void setPopupSize(int width, int height)
    Sets the size of the Popup window to the specified width and height. This is equivalent to `setPreferredSize(new Dimension(width, height))`.
    Parameters:
      `width` - the new width of the Popup in pixels
      `height` - the new height of the Popup in pixels

  - ### setSelected

    @BeanProperty(expert=true, hidden=true, description="The selected component on the popup menu") public void setSelected(Component sel)
    Sets the currently selected component, This will result in a change to the selection model.
    Parameters:
      `sel` - the `Component` to select

  - ### isBorderPainted

    public boolean isBorderPainted()
    Checks whether the border should be painted.
    Returns:
      true if the border is painted, false otherwise
    See Also:
      - `setBorderPainted(boolean)`

  - ### setBorderPainted

    @BeanProperty(bound=false, description="Is the border of the popup menu painted") public void setBorderPainted(boolean b)
    Sets whether the border should be painted.
    Parameters:
      `b` - if true, the border is painted.
    See Also:
      - `isBorderPainted()`

  - ### paintBorder

    protected void paintBorder(Graphics g)
    Paints the popup menu's border if the `borderPainted` property is `true`.
    Overrides:
      `paintBorder` in class `JComponent`
    Parameters:
      `g` - the `Graphics` object
    See Also:
      - `JComponent.paint(Graphics)`
      - `JComponent.setBorder(Border)`

  - ### getMargin

    @BeanProperty(bound=false) public Insets getMargin()
    Returns the margin, in pixels, between the popup menu's border and its containers.
    Returns:
      an `Insets` object containing the margin values.

  - ### paramString

    protected String paramString()
    Returns a string representation of this `JPopupMenu`. 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`.
    Overrides:
      `paramString` in class `JComponent`
    Returns:
      a string representation of this `JPopupMenu`.

  - ### getAccessibleContext

    @BeanProperty(bound=false) public AccessibleContext getAccessibleContext()
    Gets the AccessibleContext associated with this JPopupMenu. For JPopupMenus, the AccessibleContext takes the form of an AccessibleJPopupMenu. A new AccessibleJPopupMenu instance is created if necessary.
    Specified by:
      `getAccessibleContext` in interface `Accessible`
    Overrides:
      `getAccessibleContext` in class `Component`
    Returns:
      an AccessibleJPopupMenu that serves as the AccessibleContext of this JPopupMenu

  - ### processMouseEvent

    public void processMouseEvent(MouseEvent event, MenuElement[] path, MenuSelectionManager manager)
    This method is required to conform to the `MenuElement` interface, but it not implemented.
    Specified by:
      `processMouseEvent` in interface `MenuElement`
    Parameters:
      `event` - a `MouseEvent` to be processed
      `path` - the path of the receiving element in the menu hierarchy
      `manager` - the `MenuSelectionManager` for the menu hierarchy
    See Also:
      - `MenuElement.processMouseEvent(MouseEvent, MenuElement[], MenuSelectionManager)`

  - ### processKeyEvent

    public void processKeyEvent(KeyEvent e, MenuElement[] path, MenuSelectionManager manager)
    Processes a key event forwarded from the `MenuSelectionManager` and changes the menu selection, if necessary, by using `MenuSelectionManager`'s API.

    Note: you do not have to forward the event to sub-components. This is done automatically by the `MenuSelectionManager`.

    Specified by:
      `processKeyEvent` in interface `MenuElement`
    Parameters:
      `e` - a `KeyEvent`
      `path` - the `MenuElement` path array
      `manager` - the `MenuSelectionManager`

  - ### menuSelectionChanged

    public void menuSelectionChanged(boolean isIncluded)
    Messaged when the menubar selection changes to activate or deactivate this menu. This implements the `javax.swing.MenuElement` interface. Overrides `MenuElement.menuSelectionChanged`.
    Specified by:
      `menuSelectionChanged` in interface `MenuElement`
    Parameters:
      `isIncluded` - true if this menu is active, false if it is not
    See Also:
      - `MenuElement.menuSelectionChanged(boolean)`

  - ### getSubElements

    @BeanProperty(bound=false) public MenuElement[] getSubElements()
    Returns an array of `MenuElement`s containing the submenu for this menu component. It will only return items conforming to the `JMenuElement` interface. If popup menu is `null` returns an empty array. This method is required to conform to the `MenuElement` interface.
    Specified by:
      `getSubElements` in interface `MenuElement`
    Returns:
      an array of `MenuElement` objects
    See Also:
      - `MenuElement.getSubElements()`

  - ### getComponent

    public Component getComponent()
    Returns this `JPopupMenu` component.
    Specified by:
      `getComponent` in interface `MenuElement`
    Returns:
      this `JPopupMenu` object
    See Also:
      - `MenuElement.getComponent()`

  - ### isPopupTrigger

    public boolean isPopupTrigger(MouseEvent e)
    Returns true if the `MouseEvent` is considered a popup trigger by the `JPopupMenu`'s currently installed UI.
    Parameters:
      `e` - a `MouseEvent`
    Returns:
      true if the mouse event is a popup trigger
    Since:
      1.3