# Class JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry

java.lang.Object
javax.accessibility.AccessibleContext
javax.swing.table.JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry

All Implemented Interfaces:
  `Accessible, AccessibleComponent`

Enclosing class:
  `JTableHeader.AccessibleJTableHeader`

protected class JTableHeader.AccessibleJTableHeader.AccessibleJTableHeaderEntry extends AccessibleContext implements Accessible, AccessibleComponent
This class provides an implementation of the Java Accessibility API appropriate for JTableHeader entries.

## Field Summary

### Fields declared in class AccessibleContext

`ACCESSIBLE_ACTION_PROPERTY, ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, ACCESSIBLE_CARET_PROPERTY, ACCESSIBLE_CHILD_PROPERTY, ACCESSIBLE_COMPONENT_BOUNDS_CHANGED, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_HYPERTEXT_OFFSET, ACCESSIBLE_INVALIDATE_CHILDREN, ACCESSIBLE_NAME_PROPERTY, ACCESSIBLE_SELECTION_PROPERTY, ACCESSIBLE_STATE_PROPERTY, ACCESSIBLE_TABLE_CAPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED, ACCESSIBLE_TABLE_MODEL_CHANGED, ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_ROW_HEADER_CHANGED, ACCESSIBLE_TABLE_SUMMARY_CHANGED, ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent`

## Constructor Summary

Constructors
Constructor
Description
`AccessibleJTableHeaderEntry(int c, JTableHeader p, JTable t)`
Constructs an AccessibleJTableHeaderEntry

## Method Summary

Modifier and Type
Method
Description
`void`
`addFocusListener(FocusListener l)`
Adds the specified focus listener to receive focus events from this component.
`boolean`
`contains(Point p)`
Checks whether the specified point is within this object's bounds, where the point's x and y coordinates are defined to be relative to the coordinate system of the object.
`Accessible`
`getAccessibleAt(Point p)`
Returns the `Accessible` child, if one exists, contained at the local coordinate `Point`.
`Accessible`
`getAccessibleChild(int i)`
Returns the specified `Accessible` child of the object.
`int`
`getAccessibleChildrenCount()`
Returns the number of accessible children of the object.
`AccessibleComponent`
`getAccessibleComponent()`
Get the AccessibleComponent associated with this object.
`AccessibleContext`
`getAccessibleContext()`
Get the AccessibleContext associated with this object.
`int`
`getAccessibleIndexInParent()`
Gets the 0-based index of this object in its accessible parent.
`AccessibleRole`
`getAccessibleRole()`
Gets the role of this object.
`AccessibleStateSet`
`getAccessibleStateSet()`
Gets the state set of this object.
`Color`
`getBackground()`
Gets the background color of this object.
`Rectangle`
`getBounds()`
Gets the bounds of this object in the form of a `Rectangle` object.
`Cursor`
`getCursor()`
Gets the cursor of this object.
`Font`
`getFont()`
Gets the font of this object.
`FontMetrics`
`getFontMetrics(Font f)`
Gets the `FontMetrics` of this object.
`Color`
`getForeground()`
Gets the foreground color of this object.
`Locale`
`getLocale()`
Gets the locale of the component.
`Point`
`getLocation()`
Gets the location of the object relative to the parent in the form of a point specifying the object's top-left corner in the screen's coordinate space.
`Point`
`getLocationOnScreen()`
Returns the location of the object on the screen.
`Dimension`
`getSize()`
Returns the size of this object in the form of a `Dimension` object.
`boolean`
`isEnabled()`
Determines if the object is enabled.
`boolean`
`isFocusTraversable()`
Returns whether this object can accept focus or not.
`boolean`
`isShowing()`
Determines if the object is showing.
`boolean`
`isVisible()`
Determines if the object is visible.
`void`
`removeFocusListener(FocusListener l)`
Removes the specified focus listener so it no longer receives focus events from this component.
`void`
`requestFocus()`
Requests focus for this object.
`void`
`setAccessibleDescription(String s)`
Sets the accessible description of this object.
`void`
`setAccessibleName(String s)`
Sets the localized accessible name of this object.
`void`
`setBackground(Color c)`
Sets the background color of this object.
`void`
`setBounds(Rectangle r)`
Sets the bounds of this object in the form of a `Rectangle` object.
`void`
`setCursor(Cursor c)`
Sets the cursor of this object.
`void`
`setEnabled(boolean b)`
Sets the enabled state of the object.
`void`
`setFont(Font f)`
Sets the font of this object.
`void`
`setForeground(Color c)`
Sets the foreground color of this object.
`void`
`setLocation(Point p)`
Sets the location of the object relative to the parent.
`void`
`setSize(Dimension d)`
Resizes this object so that it has width and height.
`void`
`setVisible(boolean b)`
Sets the visible state of the object.

### Methods declared in class AccessibleContext

`addPropertyChangeListener, firePropertyChange, getAccessibleAction, getAccessibleDescription, getAccessibleEditableText, getAccessibleIcon, getAccessibleName, getAccessibleParent, getAccessibleRelationSet, getAccessibleSelection, getAccessibleTable, getAccessibleText, getAccessibleValue, removePropertyChangeListener, setAccessibleParent`

### Methods declared in class Object

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

## Constructor Details

### AccessibleJTableHeaderEntry

public AccessibleJTableHeaderEntry(int c, JTableHeader p, JTable t)
Constructs an AccessibleJTableHeaderEntry

Parameters:
  `c` - the column index
  `p` - the parent `JTableHeader`
  `t` - the table `JTable`
Since:
  1.4

## Method Details

### getAccessibleContext

public AccessibleContext getAccessibleContext()
Get the AccessibleContext associated with this object. In the implementation of the Java Accessibility API for this class, returns this object, which serves as its own AccessibleContext.

Specified by:
  `getAccessibleContext` in interface `Accessible`
Returns:
  this object

### setAccessibleName

public void setAccessibleName(String s)
Description copied from class: `AccessibleContext`
Sets the localized accessible name of this object. Changing the name will cause a `PropertyChangeEvent` to be fired for the `ACCESSIBLE_NAME_PROPERTY` property.

Overrides:
  `setAccessibleName` in class `AccessibleContext`
Parameters:
  `s` - the new localized name of the object
See Also:
  - `AccessibleContext.getAccessibleName()`
  - `AccessibleContext.addPropertyChangeListener(PropertyChangeListener)`

### setAccessibleDescription

public void setAccessibleDescription(String s)
Description copied from class: `AccessibleContext`
Sets the accessible description of this object. Changing the name will cause a `PropertyChangeEvent` to be fired for the `ACCESSIBLE_DESCRIPTION_PROPERTY` property.

Overrides:
  `setAccessibleDescription` in class `AccessibleContext`
Parameters:
  `s` - the new localized description of the object
See Also:
  - `AccessibleContext.setAccessibleName(String)`
  - `AccessibleContext.addPropertyChangeListener(PropertyChangeListener)`

### getAccessibleRole

public AccessibleRole getAccessibleRole()
Description copied from class: `AccessibleContext`
Gets the role of this object. The role of the object is the generic purpose or use of the class of this object. For example, the role of a push button is `AccessibleRole.PUSH_BUTTON`. The roles in `AccessibleRole` are provided so component developers can pick from a set of predefined roles. This enables assistive technologies to provide a consistent interface to various tweaked subclasses of components (e.g., use `AccessibleRole.PUSH_BUTTON` for all components that act like a push button) as well as distinguish between subclasses that behave differently (e.g., `AccessibleRole.CHECK_BOX` for check boxes and `AccessibleRole.RADIO_BUTTON` for radio buttons).

Note that the `AccessibleRole` class is also extensible, so custom component developers can define their own `AccessibleRole`'s if the set of predefined roles is inadequate.

Specified by:
  `getAccessibleRole` in class `AccessibleContext`
Returns:
  an instance of `AccessibleRole` describing the role of the object
See Also:
  - `AccessibleRole`

### getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()
Description copied from class: `AccessibleContext`
Gets the state set of this object. The `AccessibleStateSet` of an object is composed of a set of unique `AccessibleStates`. A change in the `AccessibleStateSet` of an object will cause a `PropertyChangeEvent` to be fired for the `ACCESSIBLE_STATE_PROPERTY` property.

Specified by:
  `getAccessibleStateSet` in class `AccessibleContext`
Returns:
  an instance of `AccessibleStateSet` containing the current state set of the object
See Also:
  - `AccessibleStateSet`
  - `AccessibleState`
  - `AccessibleContext.addPropertyChangeListener(PropertyChangeListener)`

### getAccessibleIndexInParent

public int getAccessibleIndexInParent()
Description copied from class: `AccessibleContext`
Gets the 0-based index of this object in its accessible parent.

Specified by:
  `getAccessibleIndexInParent` in class `AccessibleContext`
Returns:
  the 0-based index of this object in its parent; -1 if this object does not have an accessible parent.
See Also:
  - `AccessibleContext.getAccessibleParent()`
  - `AccessibleContext.getAccessibleChildrenCount()`
  - `AccessibleContext.getAccessibleChild(int)`

### getAccessibleChildrenCount

public int getAccessibleChildrenCount()
Description copied from class: `AccessibleContext`
Returns the number of accessible children of the object.

Specified by:
  `getAccessibleChildrenCount` in class `AccessibleContext`
Returns:
  the number of accessible children of the object.

### getAccessibleChild

public Accessible getAccessibleChild(int i)
Description copied from class: `AccessibleContext`
Returns the specified `Accessible` child of the object. The `Accessible` children of an `Accessible` object are zero-based, so the first child of an `Accessible` child is at index 0, the second child is at index 1, and so on.

Specified by:
  `getAccessibleChild` in class `AccessibleContext`
Parameters:
  `i` - zero-based index of child
Returns:
  the `Accessible` child of the object
See Also:
  - `AccessibleContext.getAccessibleChildrenCount()`

### getLocale

public Locale getLocale()
Description copied from class: `AccessibleContext`
Gets the locale of the component. If the component does not have a locale, then the locale of its parent is returned.

Specified by:
  `getLocale` in class `AccessibleContext`
Returns:
  this component's locale. If this component does not have a locale, the locale of its parent is returned.

### getAccessibleComponent

public AccessibleComponent getAccessibleComponent()
Get the AccessibleComponent associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleComponent interface on behalf of itself.

Overrides:
  `getAccessibleComponent` in class `AccessibleContext`
Returns:
  this object
See Also:
  - `AccessibleComponent`

### getBackground

public Color getBackground()
Description copied from interface: `AccessibleComponent`
Gets the background color of this object.

Specified by:
  `getBackground` in interface `AccessibleComponent`
Returns:
  the background color, if supported, of the object; otherwise, `null`
See Also:
  - `AccessibleComponent.setBackground(Color)`

### setBackground

public void setBackground(Color c)
Description copied from interface: `AccessibleComponent`
Sets the background color of this object.

Specified by:
  `setBackground` in interface `AccessibleComponent`
Parameters:
  `c` - the new color for the background
See Also:
  - `AccessibleComponent.getBackground()`

### getForeground

public Color getForeground()
Description copied from interface: `AccessibleComponent`
Gets the foreground color of this object.

Specified by:
  `getForeground` in interface `AccessibleComponent`
Returns:
  the foreground color, if supported, of the object; otherwise, `null`
See Also:
  - `AccessibleComponent.setForeground(Color)`

### setForeground

public void setForeground(Color c)
Description copied from interface: `AccessibleComponent`
Sets the foreground color of this object.

Specified by:
  `setForeground` in interface `AccessibleComponent`
Parameters:
  `c` - the new color for the foreground
See Also:
  - `AccessibleComponent.getForeground()`

### getCursor

public Cursor getCursor()
Description copied from interface: `AccessibleComponent`
Gets the cursor of this object.

Specified by:
  `getCursor` in interface `AccessibleComponent`
Returns:
  the cursor, if supported, of the object; otherwise, `null`
See Also:
  - `AccessibleComponent.setCursor(Cursor)`

### setCursor

public void setCursor(Cursor c)
Description copied from interface: `AccessibleComponent`
Sets the cursor of this object.

Specified by:
  `setCursor` in interface `AccessibleComponent`
Parameters:
  `c` - the new cursor for the object
See Also:
  - `AccessibleComponent.getCursor()`

### getFont

public Font getFont()
Description copied from interface: `AccessibleComponent`
Gets the font of this object.

Specified by:
  `getFont` in interface `AccessibleComponent`
Returns:
  the font, if supported, for the object; otherwise, `null`
See Also:
  - `AccessibleComponent.setFont(Font)`

### setFont

public void setFont(Font f)
Description copied from interface: `AccessibleComponent`
Sets the font of this object.

Specified by:
  `setFont` in interface `AccessibleComponent`
Parameters:
  `f` - the new font for the object
See Also:
  - `AccessibleComponent.getFont()`

### getFontMetrics

public FontMetrics getFontMetrics(Font f)
Description copied from interface: `AccessibleComponent`
Gets the `FontMetrics` of this object.

Specified by:
  `getFontMetrics` in interface `AccessibleComponent`
Parameters:
  `f` - the font for which font metrics is to be obtained
Returns:
  the `FontMetrics`, if supported, the object; otherwise, `null`
See Also:
  - `AccessibleComponent.getFont()`

### isEnabled

public boolean isEnabled()
Description copied from interface: `AccessibleComponent`
Determines if the object is enabled. Objects that are enabled will also have the `AccessibleState.ENABLED` state set in their `AccessibleStateSets`.

Specified by:
  `isEnabled` in interface `AccessibleComponent`
Returns:
  `true` if object is enabled; otherwise, `false`
See Also:
  - `AccessibleComponent.setEnabled(boolean)`
  - `AccessibleContext.getAccessibleStateSet()`
  - `AccessibleState.ENABLED`
  - `AccessibleStateSet`

### setEnabled

public void setEnabled(boolean b)
Description copied from interface: `AccessibleComponent`
Sets the enabled state of the object.

Specified by:
  `setEnabled` in interface `AccessibleComponent`
Parameters:
  `b` - if `true`, enables this object; otherwise, disables it
See Also:
  - `AccessibleComponent.isEnabled()`

### isVisible

public boolean isVisible()
Description copied from interface: `AccessibleComponent`
Determines if the object is visible. Note: this means that the object intends to be visible; however, it may not be showing on the screen because one of the objects that this object is contained by is currently not visible. To determine if an object is showing on the screen, use `AccessibleComponent.isShowing()`

Objects that are visible will also have the `AccessibleState.VISIBLE` state set in their `AccessibleStateSets`.

Specified by:
  `isVisible` in interface `AccessibleComponent`
Returns:
  `true` if object is visible; otherwise, `false`
See Also:
  - `AccessibleComponent.setVisible(boolean)`
  - `AccessibleContext.getAccessibleStateSet()`
  - `AccessibleState.VISIBLE`
  - `AccessibleStateSet`

### setVisible

public void setVisible(boolean b)
Description copied from interface: `AccessibleComponent`
Sets the visible state of the object.

Specified by:
  `setVisible` in interface `AccessibleComponent`
Parameters:
  `b` - if `true`, shows this object; otherwise, hides it
See Also:
  - `AccessibleComponent.isVisible()`

### isShowing

public boolean isShowing()
Description copied from interface: `AccessibleComponent`
Determines if the object is showing. This is determined by checking the visibility of the object and its ancestors. Note: this will return `true` even if the object is obscured by another (for example, it is underneath a menu that was pulled down).

Specified by:
  `isShowing` in interface `AccessibleComponent`
Returns:
  `true` if object is showing; otherwise, `false`

### contains

public boolean contains(Point p)
Description copied from interface: `AccessibleComponent`
Checks whether the specified point is within this object's bounds, where the point's x and y coordinates are defined to be relative to the coordinate system of the object.

Specified by:
  `contains` in interface `AccessibleComponent`
Parameters:
  `p` - the point relative to the coordinate system of the object
Returns:
  `true` if object contains point; otherwise `false`
See Also:
  - `AccessibleComponent.getBounds()`

### getLocationOnScreen

public Point getLocationOnScreen()
Description copied from interface: `AccessibleComponent`
Returns the location of the object on the screen.

Specified by:
  `getLocationOnScreen` in interface `AccessibleComponent`
Returns:
  the location of the object on screen; `null` if this object is not on the screen
See Also:
  - `AccessibleComponent.getBounds()`
  - `AccessibleComponent.getLocation()`

### getLocation

public Point getLocation()
Description copied from interface: `AccessibleComponent`
Gets the location of the object relative to the parent in the form of a point specifying the object's top-left corner in the screen's coordinate space.

Specified by:
  `getLocation` in interface `AccessibleComponent`
Returns:
  An instance of `Point` representing the top-left corner of the object's bounds in the coordinate space of the screen; `null` if this object or its parent are not on the screen
See Also:
  - `AccessibleComponent.getBounds()`
  - `AccessibleComponent.getLocationOnScreen()`

### setLocation

public void setLocation(Point p)
Description copied from interface: `AccessibleComponent`
Sets the location of the object relative to the parent.

Specified by:
  `setLocation` in interface `AccessibleComponent`
Parameters:
  `p` - the new position for the top-left corner
See Also:
  - `AccessibleComponent.getLocation()`

### getBounds

public Rectangle getBounds()
Description copied from interface: `AccessibleComponent`
Gets the bounds of this object in the form of a `Rectangle` object. The bounds specify this object's width, height, and location relative to its parent.

Specified by:
  `getBounds` in interface `AccessibleComponent`
Returns:
  A rectangle indicating this component's bounds; `null` if this object is not on the screen.
See Also:
  - `AccessibleComponent.contains(Point)`

### setBounds

public void setBounds(Rectangle r)
Description copied from interface: `AccessibleComponent`
Sets the bounds of this object in the form of a `Rectangle` object. The bounds specify this object's width, height, and location relative to its parent.

Specified by:
  `setBounds` in interface `AccessibleComponent`
Parameters:
  `r` - rectangle indicating this component's bounds
See Also:
  - `AccessibleComponent.getBounds()`

### getSize

public Dimension getSize()
Description copied from interface: `AccessibleComponent`
Returns the size of this object in the form of a `Dimension` object. The `height` field of the `Dimension` object contains this object's height, and the `width` field of the `Dimension` object contains this object's width.

Specified by:
  `getSize` in interface `AccessibleComponent`
Returns:
  A `Dimension` object that indicates the size of this component; `null` if this object is not on the screen
See Also:
  - `AccessibleComponent.setSize(Dimension)`

### setSize

public void setSize(Dimension d)
Description copied from interface: `AccessibleComponent`
Resizes this object so that it has width and height.

Specified by:
  `setSize` in interface `AccessibleComponent`
Parameters:
  `d` - The dimension specifying the new size of the object
See Also:
  - `AccessibleComponent.getSize()`

### getAccessibleAt

public Accessible getAccessibleAt(Point p)
Description copied from interface: `AccessibleComponent`
Returns the `Accessible` child, if one exists, contained at the local coordinate `Point`.

Specified by:
  `getAccessibleAt` in interface `AccessibleComponent`
Parameters:
  `p` - The point relative to the coordinate system of this object
Returns:
  the `Accessible`, if it exists, at the specified location; otherwise `null`

### isFocusTraversable

public boolean isFocusTraversable()
Description copied from interface: `AccessibleComponent`
Returns whether this object can accept focus or not. Objects that can accept focus will also have the `AccessibleState.FOCUSABLE` state set in their `AccessibleStateSets`.

Specified by:
  `isFocusTraversable` in interface `AccessibleComponent`
Returns:
  `true` if object can accept focus; otherwise `false`
See Also:
  - `AccessibleContext.getAccessibleStateSet()`
  - `AccessibleState.FOCUSABLE`
  - `AccessibleState.FOCUSED`
  - `AccessibleStateSet`

### requestFocus

public void requestFocus()
Description copied from interface: `AccessibleComponent`
Requests focus for this object. If this object cannot accept focus, nothing will happen. Otherwise, the object will attempt to take focus.

Specified by:
  `requestFocus` in interface `AccessibleComponent`
See Also:
  - `AccessibleComponent.isFocusTraversable()`

### addFocusListener

public void addFocusListener(FocusListener l)
Description copied from interface: `AccessibleComponent`
Adds the specified focus listener to receive focus events from this component.

Specified by:
  `addFocusListener` in interface `AccessibleComponent`
Parameters:
  `l` - the focus listener
See Also:
  - `AccessibleComponent.removeFocusListener(FocusListener)`

### removeFocusListener

public void removeFocusListener(FocusListener l)
Description copied from interface: `AccessibleComponent`
Removes the specified focus listener so it no longer receives focus events from this component.

Specified by:
  `removeFocusListener` in interface `AccessibleComponent`
Parameters:
  `l` - the focus listener
See Also:
  - `AccessibleComponent.addFocusListener(FocusListener)`