# Class JTabbedPane

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

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

@JavaBean(defaultProperty="UI", description="A component which provides a tab folder metaphor for displaying one component from a set of components.") public class JTabbedPane extends JComponent implements Serializable, Accessible, SwingConstants
A component that lets the user switch between a group of components by clicking on a tab with a given title and/or icon. For examples and information on using tabbed panes see How to Use Tabbed Panes, a section in The Java Tutorial.

Tabs/components are added to a `TabbedPane` object by using the `addTab` and `insertTab` methods. A tab is represented by an index corresponding to the position it was added in, where the first tab has an index equal to 0 and the last tab has an index equal to the tab count minus 1.

The `TabbedPane` uses a `SingleSelectionModel` to represent the set of tab indices and the currently selected index. If the tab count is greater than 0, then there will always be a selected index, which by default will be initialized to the first tab. If the tab count is 0, then the selected index will be -1.

The tab title can be rendered by a `Component`. For example, the following produce similar results:

    // In this case the look and feel renders the title for the tab.
    tabbedPane.addTab("Tab", myComponent);
    // In this case the custom component is responsible for rendering the
    // title of the tab.
    tabbedPane.addTab(null, myComponent);
    tabbedPane.setTabComponentAt(0, new JLabel("Tab"));

The latter is typically used when you want a more complex user interaction that requires custom components on the tab. For example, you could provide a custom component that animates or one that has widgets for closing the tab.

If you specify a component for a tab, the `JTabbedPane` will not render any text or icon you have specified for the tab.

Note: Do not use `setVisible` directly on a tab component to make it visible, use `setSelectedComponent` or `setSelectedIndex` methods instead.

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
See Also:
  - `SingleSelectionModel`

## Nested Class Summary

Nested Classes
Modifier and Type
Class
Description
`protected class`
`JTabbedPane.AccessibleJTabbedPane`
This class implements accessibility support for the `JTabbedPane` class.
`protected class`
`JTabbedPane.ModelListener`
We pass `ModelChanged` events along to the listeners with the tabbedpane (instead of the model itself) as the event source.

### 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
Modifier and Type
Field
Description
`protected ChangeEvent`
`changeEvent`
Only one `ChangeEvent` is needed per `TabPane` instance since the event's only (read-only) state is the source property.
`protected ChangeListener`
`changeListener`
The `changeListener` is the listener we add to the model.
`protected SingleSelectionModel`
`model`
The default selection model
`static final int`
`SCROLL_TAB_LAYOUT`
Tab layout policy for providing a subset of available tabs when all the tabs will not fit within a single run.
`protected int`
`tabPlacement`
Where the tabs are placed.
`static final int`
`WRAP_TAB_LAYOUT`
The tab layout policy for wrapping tabs in multiple runs when all tabs will not fit within a single run.

### 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`

### Fields declared in interface SwingConstants

`BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST`

## Constructor Summary

Constructors
Constructor
Description
`JTabbedPane()`
Creates an empty `TabbedPane` with a default tab placement of `JTabbedPane.TOP`.
`JTabbedPane(int tabPlacement)`
Creates an empty `TabbedPane` with the specified tab placement of either: `JTabbedPane.TOP`, `JTabbedPane.BOTTOM`, `JTabbedPane.LEFT`, or `JTabbedPane.RIGHT`.
`JTabbedPane(int tabPlacement, int tabLayoutPolicy)`
Creates an empty `TabbedPane` with the specified tab placement and tab layout policy.

## Method Summary

Modifier and Type
Method
Description
`Component`
`add(Component component)`
Adds a `component` with a tab title defaulting to the name of the component which is the result of calling `component.getName`.
`Component`
`add(Component component, int index)`
Adds a `component` at the specified tab index with a tab title defaulting to the name of the component.
`void`
`add(Component component, Object constraints)`
Adds a `component` to the tabbed pane.
`void`
`add(Component component, Object constraints, int index)`
Adds a `component` at the specified tab index.
`Component`
`add(String title, Component component)`
Adds a `component` with the specified tab title.
`void`
`addChangeListener(ChangeListener l)`
Adds a `ChangeListener` to this tabbedpane.
`void`
`addTab(String title, Component component)`
Adds a `component` represented by a `title` and no icon.
`void`
`addTab(String title, Icon icon, Component component)`
Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`.
`void`
`addTab(String title, Icon icon, Component component, String tip)`
Adds a `component` and `tip` represented by a `title` and/or `icon`, either of which can be `null`.
`protected ChangeListener`
`createChangeListener()`
Subclasses that want to handle `ChangeEvents` differently can override this to return a subclass of `ModelListener` or another `ChangeListener` implementation.
`protected void`
`fireStateChanged()`
Sends a `ChangeEvent`, with this `JTabbedPane` as the source, to each registered listener.
`AccessibleContext`
`getAccessibleContext()`
Gets the AccessibleContext associated with this JTabbedPane.
`Color`
`getBackgroundAt(int index)`
Returns the tab background color at `index`.
`Rectangle`
`getBoundsAt(int index)`
Returns the tab bounds at `index`.
`ChangeListener[]`
`getChangeListeners()`
Returns an array of all the `ChangeListener`s added to this `JTabbedPane` with `addChangeListener`.
`Component`
`getComponentAt(int index)`
Returns the component at `index`.
`Icon`
`getDisabledIconAt(int index)`
Returns the tab disabled icon at `index`.
`int`
`getDisplayedMnemonicIndexAt(int tabIndex)`
Returns the character, as an index, that the look and feel should provide decoration for as representing the mnemonic character.
`Color`
`getForegroundAt(int index)`
Returns the tab foreground color at `index`.
`Icon`
`getIconAt(int index)`
Returns the tab icon at `index`.
`int`
`getMnemonicAt(int tabIndex)`
Returns the keyboard mnemonic for accessing the specified tab.
`SingleSelectionModel`
`getModel()`
Returns the model associated with this tabbedpane.
`Component`
`getSelectedComponent()`
Returns the currently selected component for this tabbedpane.
`int`
`getSelectedIndex()`
Returns the currently selected index for this tabbedpane.
`Component`
`getTabComponentAt(int index)`
Returns the tab component at `index`.
`int`
`getTabCount()`
Returns the number of tabs in this `tabbedpane`.
`int`
`getTabLayoutPolicy()`
Returns the policy used by the tabbedpane to layout the tabs when all the tabs will not fit within a single run.
`int`
`getTabPlacement()`
Returns the placement of the tabs for this tabbedpane.
`int`
`getTabRunCount()`
Returns the number of tab runs currently used to display the tabs.
`String`
`getTitleAt(int index)`
Returns the tab title at `index`.
`String`
`getToolTipText(MouseEvent event)`
Returns the tooltip text for the component determined by the mouse event location.
`String`
`getToolTipTextAt(int index)`
Returns the tab tooltip text at `index`.
`TabbedPaneUI`
`getUI()`
Returns the UI object which implements the L&F for this component.
`String`
`getUIClassID()`
Returns the name of the UI class that implements the L&F for this component.
`int`
`indexAtLocation(int x, int y)`
Returns the tab index corresponding to the tab whose bounds intersect the specified location.
`int`
`indexOfComponent(Component component)`
Returns the index of the tab for the specified component.
`int`
`indexOfTab(String title)`
Returns the first tab index with a given `title`, or -1 if no tab has this title.
`int`
`indexOfTab(Icon icon)`
Returns the first tab index with a given `icon`, or -1 if no tab has this icon.
`int`
`indexOfTabComponent(Component tabComponent)`
Returns the index of the tab for the specified tab component.
`void`
`insertTab(String title, Icon icon, Component component, String tip, int index)`
Inserts a new tab for the given component, at the given index, represented by the given title and/or icon, either of which may be `null`.
`boolean`
`isEnabledAt(int index)`
Returns whether or not the tab at `index` is currently enabled.
`protected String`
`paramString()`
Returns a string representation of this `JTabbedPane`.
`void`
`remove(int index)`
Removes the tab and component which corresponds to the specified index.
`void`
`remove(Component component)`
Removes the specified `Component` from the `JTabbedPane`.
`void`
`removeAll()`
Removes all the tabs and their corresponding components from the `tabbedpane`.
`void`
`removeChangeListener(ChangeListener l)`
Removes a `ChangeListener` from this tabbedpane.
`void`
`removeTabAt(int index)`
Removes the tab at `index`.
`void`
`setBackgroundAt(int index, Color background)`
Sets the background color at `index` to `background` which can be `null`, in which case the tab's background color will default to the background color of the `tabbedpane`.
`void`
`setComponentAt(int index, Component component)`
Sets the component at `index` to `component`.
`void`
`setDisabledIconAt(int index, Icon disabledIcon)`
Sets the disabled icon at `index` to `icon` which can be `null`.
`void`
`setDisplayedMnemonicIndexAt(int tabIndex, int mnemonicIndex)`
Provides a hint to the look and feel as to which character in the text should be decorated to represent the mnemonic.
`void`
`setEnabledAt(int index, boolean enabled)`
Sets whether or not the tab at `index` is enabled.
`void`
`setForegroundAt(int index, Color foreground)`
Sets the foreground color at `index` to `foreground` which can be `null`, in which case the tab's foreground color will default to the foreground color of this `tabbedpane`.
`void`
`setIconAt(int index, Icon icon)`
Sets the icon at `index` to `icon` which can be `null`.
`void`
`setMnemonicAt(int tabIndex, int mnemonic)`
Sets the keyboard mnemonic for accessing the specified tab.
`void`
`setModel(SingleSelectionModel model)`
Sets the model to be used with this tabbedpane.
`void`
`setSelectedComponent(Component c)`
Sets the selected component for this tabbedpane.
`void`
`setSelectedIndex(int index)`
Sets the selected index for this tabbedpane.
`void`
`setTabComponentAt(int index, Component component)`
Sets the component that is responsible for rendering the title for the specified tab.
`void`
`setTabLayoutPolicy(int tabLayoutPolicy)`
Sets the policy which the tabbedpane will use in laying out the tabs when all the tabs will not fit within a single run.
`void`
`setTabPlacement(int tabPlacement)`
Sets the tab placement for this tabbedpane.
`void`
`setTitleAt(int index, String title)`
Sets the title at `index` to `title` which can be `null`.
`void`
`setToolTipTextAt(int index, String toolTipText)`
Sets the tooltip text at `index` to `toolTipText` which can be `null`.
`void`
`setUI(TabbedPaneUI ui)`
Sets the UI object which implements the L&F for this component.
`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, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, 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, setVisible, unregisterKeyboardAction, update`

### Methods declared in class Container

`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, 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, isVisible, 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, 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`

## Field Details

### WRAP_TAB_LAYOUT

public static final int WRAP_TAB_LAYOUT
The tab layout policy for wrapping tabs in multiple runs when all tabs will not fit within a single run.

See Also:
  - Constant Field Values

### SCROLL_TAB_LAYOUT

public static final int SCROLL_TAB_LAYOUT
Tab layout policy for providing a subset of available tabs when all the tabs will not fit within a single run. If all the tabs do not fit within a single run the look and feel will provide a way to navigate to hidden tabs.

See Also:
  - Constant Field Values

### tabPlacement

protected int tabPlacement
Where the tabs are placed.

See Also:
  - `setTabPlacement(int)`

### model

protected SingleSelectionModel model
The default selection model

### changeListener

protected ChangeListener changeListener
The `changeListener` is the listener we add to the model.

### changeEvent

protected transient ChangeEvent changeEvent
Only one `ChangeEvent` is needed per `TabPane` instance since the event's only (read-only) state is the source property. The source of events generated here is always "this".

## Constructor Details

### JTabbedPane

public JTabbedPane()
Creates an empty `TabbedPane` with a default tab placement of `JTabbedPane.TOP`.

See Also:
  - `addTab(String, Icon, Component, String)`

### JTabbedPane

public JTabbedPane(int tabPlacement)
Creates an empty `TabbedPane` with the specified tab placement of either: `JTabbedPane.TOP`, `JTabbedPane.BOTTOM`, `JTabbedPane.LEFT`, or `JTabbedPane.RIGHT`.

Parameters:
  `tabPlacement` - the placement for the tabs relative to the content
See Also:
  - `addTab(String, Icon, Component, String)`

### JTabbedPane

public JTabbedPane(int tabPlacement, int tabLayoutPolicy)
Creates an empty `TabbedPane` with the specified tab placement and tab layout policy. Tab placement may be either: `JTabbedPane.TOP`, `JTabbedPane.BOTTOM`, `JTabbedPane.LEFT`, or `JTabbedPane.RIGHT`. Tab layout policy may be either: `JTabbedPane.WRAP_TAB_LAYOUT` or `JTabbedPane.SCROLL_TAB_LAYOUT`.

Parameters:
  `tabPlacement` - the placement for the tabs relative to the content
  `tabLayoutPolicy` - the policy for laying out tabs when all tabs will not fit on one run
Throws:
  `IllegalArgumentException` - if tab placement or tab layout policy are not one of the above supported values
Since:
  1.4
See Also:
  - `addTab(String, Icon, Component, String)`

## Method Details

### getUI

public TabbedPaneUI getUI()
Returns the UI object which implements the L&F for this component.

Overrides:
  `getUI` in class `JComponent`
Returns:
  a `TabbedPaneUI` object
See Also:
  - `setUI(TabbedPaneUI)`

### setUI

@BeanProperty(hidden=true, visualUpdate=true, description="The UI object that implements the tabbedpane's LookAndFeel") public void setUI(TabbedPaneUI ui)
Sets the UI object which implements the L&F for this component.

Parameters:
  `ui` - the new UI 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 UI class that implements the L&F for this component.

Overrides:
  `getUIClassID` in class `JComponent`
Returns:
  the string "TabbedPaneUI"
See Also:
  - `JComponent.getUIClassID()`
  - `UIDefaults.getUI(JComponent)`

### createChangeListener

protected ChangeListener createChangeListener()
Subclasses that want to handle `ChangeEvents` differently can override this to return a subclass of `ModelListener` or another `ChangeListener` implementation.

Returns:
  a `ChangeListener`
See Also:
  - `fireStateChanged()`

### addChangeListener

public void addChangeListener(ChangeListener l)
Adds a `ChangeListener` to this tabbedpane.

Parameters:
  `l` - the `ChangeListener` to add
See Also:
  - `fireStateChanged()`
  - `removeChangeListener(ChangeListener)`

### removeChangeListener

public void removeChangeListener(ChangeListener l)
Removes a `ChangeListener` from this tabbedpane.

Parameters:
  `l` - the `ChangeListener` to remove
See Also:
  - `fireStateChanged()`
  - `addChangeListener(ChangeListener)`

### getChangeListeners

@BeanProperty(bound=false) public ChangeListener[] getChangeListeners()
Returns an array of all the `ChangeListener`s added to this `JTabbedPane` with `addChangeListener`.

Returns:
  all of the `ChangeListener`s added or an empty array if no listeners have been added
Since:
  1.4

### fireStateChanged

protected void fireStateChanged()
Sends a `ChangeEvent`, with this `JTabbedPane` as the source, to each registered listener. This method is called each time there is a change to either the selected index or the selected tab in the `JTabbedPane`. Usually, the selected index and selected tab change together. However, there are some cases, such as tab addition, where the selected index changes and the same tab remains selected. There are other cases, such as deleting the selected tab, where the index remains the same, but a new tab moves to that index. Events are fired for all of these cases.

See Also:
  - `addChangeListener(ChangeListener)`
  - `EventListenerList`

### getModel

public SingleSelectionModel getModel()
Returns the model associated with this tabbedpane.

Returns:
  the `SingleSelectionModel` associated with this tabbedpane
See Also:
  - `setModel(SingleSelectionModel)`

### setModel

@BeanProperty(description="The tabbedpane's SingleSelectionModel.") public void setModel(SingleSelectionModel model)
Sets the model to be used with this tabbedpane.

Parameters:
  `model` - the model to be used
See Also:
  - `getModel()`

### getTabPlacement

public int getTabPlacement()
Returns the placement of the tabs for this tabbedpane.

Returns:
  an `int` specifying the placement for the tabs
See Also:
  - `setTabPlacement(int)`

### setTabPlacement

@BeanProperty(preferred=true, visualUpdate=true, enumerationValues={"JTabbedPane.TOP","JTabbedPane.LEFT","JTabbedPane.BOTTOM","JTabbedPane.RIGHT"}, description="The tabbedpane's tab placement.") public void setTabPlacement(int tabPlacement)
Sets the tab placement for this tabbedpane. Possible values are:

- `JTabbedPane.TOP`
- `JTabbedPane.BOTTOM`
- `JTabbedPane.LEFT`
- `JTabbedPane.RIGHT`

The default value, if not set, is `SwingConstants.TOP`.

Parameters:
  `tabPlacement` - the placement for the tabs relative to the content
Throws:
  `IllegalArgumentException` - if tab placement value isn't one of the above valid values

### getTabLayoutPolicy

public int getTabLayoutPolicy()
Returns the policy used by the tabbedpane to layout the tabs when all the tabs will not fit within a single run.

Returns:
  an `int` specifying the policy used to layout the tabs
Since:
  1.4
See Also:
  - `setTabLayoutPolicy(int)`

### setTabLayoutPolicy

@BeanProperty(preferred=true, visualUpdate=true, enumerationValues={"JTabbedPane.WRAP_TAB_LAYOUT","JTabbedPane.SCROLL_TAB_LAYOUT"}, description="The tabbedpane's policy for laying out the tabs") public void setTabLayoutPolicy(int tabLayoutPolicy)
Sets the policy which the tabbedpane will use in laying out the tabs when all the tabs will not fit within a single run. Possible values are:

- `JTabbedPane.WRAP_TAB_LAYOUT`
- `JTabbedPane.SCROLL_TAB_LAYOUT`

The default value, if not set by the UI, is `JTabbedPane.WRAP_TAB_LAYOUT`.

Some look and feels might only support a subset of the possible layout policies, in which case the value of this property may be ignored.

Parameters:
  `tabLayoutPolicy` - the policy used to layout the tabs
Throws:
  `IllegalArgumentException` - if layoutPolicy value isn't one of the above valid values
Since:
  1.4
See Also:
  - `getTabLayoutPolicy()`

### getSelectedIndex

public int getSelectedIndex()
Returns the currently selected index for this tabbedpane. Returns -1 if there is no currently selected tab.

Returns:
  the index of the selected tab
See Also:
  - `setSelectedIndex(int)`

### setSelectedIndex

@BeanProperty(bound=false, preferred=true, description="The tabbedpane's selected tab index.") public void setSelectedIndex(int index)
Sets the selected index for this tabbedpane. The index must be a valid tab index or -1, which indicates that no tab should be selected (can also be used when there are no tabs in the tabbedpane). If a -1 value is specified when the tabbedpane contains one or more tabs, then the results will be implementation defined.

Parameters:
  `index` - the index to be selected
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < -1 || index >= tab count)`
See Also:
  - `getSelectedIndex()`
  - `SingleSelectionModel.setSelectedIndex(int)`

### getSelectedComponent

public Component getSelectedComponent()
Returns the currently selected component for this tabbedpane. Returns `null` if there is no currently selected tab.

Returns:
  the component corresponding to the selected tab
See Also:
  - `setSelectedComponent(Component)`

### setSelectedComponent

@BeanProperty(bound=false, preferred=true, description="The tabbedpane's selected component.") public void setSelectedComponent(Component c)
Sets the selected component for this tabbedpane. This will automatically set the `selectedIndex` to the index corresponding to the specified component.

Parameters:
  `c` - the selected `Component` for this `TabbedPane`
Throws:
  `IllegalArgumentException` - if component not found in tabbed pane
See Also:
  - `getSelectedComponent()`

### insertTab

public void insertTab(String title, Icon icon, Component component, String tip, int index)
Inserts a new tab for the given component, at the given index, represented by the given title and/or icon, either of which may be `null`.

Parameters:
  `title` - the title to be displayed on the tab
  `icon` - the icon to be displayed on the tab
  `component` - the component to be displayed when this tab is clicked.
  `tip` - the tooltip to be displayed for this tab
  `index` - the position to insert this new tab `(index >= 0 && index <= getTabCount())`
Throws:
  `IndexOutOfBoundsException` - if the index is out of range `(index < 0 || index > getTabCount())`
See Also:
  - `addTab(String, Icon, Component, String)`
  - `removeTabAt(int)`

### addTab

public void addTab(String title, Icon icon, Component component, String tip)
Adds a `component` and `tip` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

Parameters:
  `title` - the title to be displayed in this tab
  `icon` - the icon to be displayed in this tab
  `component` - the component to be displayed when this tab is clicked
  `tip` - the tooltip to be displayed for this tab
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### addTab

public void addTab(String title, Icon icon, Component component)
Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

Parameters:
  `title` - the title to be displayed in this tab
  `icon` - the icon to be displayed in this tab
  `component` - the component to be displayed when this tab is clicked
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### addTab

public void addTab(String title, Component component)
Adds a `component` represented by a `title` and no icon. Cover method for `insertTab`.

Parameters:
  `title` - the title to be displayed in this tab
  `component` - the component to be displayed when this tab is clicked
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### add

public Component add(Component component)
Adds a `component` with a tab title defaulting to the name of the component which is the result of calling `component.getName`. Cover method for `insertTab`.

Overrides:
  `add` in class `Container`
Parameters:
  `component` - the component to be displayed when this tab is clicked
Returns:
  the component
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### add

public Component add(String title, Component component)
Adds a `component` with the specified tab title. Cover method for `insertTab`.

Overrides:
  `add` in class `Container`
Parameters:
  `title` - the title to be displayed in this tab
  `component` - the component to be displayed when this tab is clicked
Returns:
  the component
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### add

public Component add(Component component, int index)
Adds a `component` at the specified tab index with a tab title defaulting to the name of the component. Cover method for `insertTab`.

Overrides:
  `add` in class `Container`
Parameters:
  `component` - the component to be displayed when this tab is clicked
  `index` - the position to insert this new tab
Returns:
  the component
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### add

public void add(Component component, Object constraints)
Adds a `component` to the tabbed pane. If `constraints` is a `String` or an `Icon`, it will be used for the tab title, otherwise the component's name will be used as the tab title. Cover method for `insertTab`.

Overrides:
  `add` in class `Container`
Parameters:
  `component` - the component to be displayed when this tab is clicked
  `constraints` - the object to be displayed in the tab
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### add

public void add(Component component, Object constraints, int index)
Adds a `component` at the specified tab index. If `constraints` is a `String` or an `Icon`, it will be used for the tab title, otherwise the component's name will be used as the tab title. Cover method for `insertTab`.

Overrides:
  `add` in class `Container`
Parameters:
  `component` - the component to be displayed when this tab is clicked
  `constraints` - the object to be displayed in the tab
  `index` - the position to insert this new tab
See Also:
  - `insertTab(String, Icon, Component, String, int)`
  - `removeTabAt(int)`

### removeTabAt

public void removeTabAt(int index)
Removes the tab at `index`. After the component associated with `index` is removed, its visibility is reset to true to ensure it will be visible if added to other containers.

Parameters:
  `index` - the index of the tab to be removed
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `addTab(String, Icon, Component, String)`
  - `insertTab(String, Icon, Component, String, int)`

### remove

public void remove(Component component)
Removes the specified `Component` from the `JTabbedPane`. The method does nothing if the `component` is null.

Overrides:
  `remove` in class `Container`
Parameters:
  `component` - the component to remove from the tabbedpane
See Also:
  - `addTab(String, Icon, Component, String)`
  - `removeTabAt(int)`

### remove

public void remove(int index)
Removes the tab and component which corresponds to the specified index.

Overrides:
  `remove` in class `Container`
Parameters:
  `index` - the index of the component to remove from the `tabbedpane`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `addTab(String, Icon, Component, String)`
  - `removeTabAt(int)`

### removeAll

public void removeAll()
Removes all the tabs and their corresponding components from the `tabbedpane`.

Overrides:
  `removeAll` in class `Container`
See Also:
  - `addTab(String, Icon, Component, String)`
  - `removeTabAt(int)`

### getTabCount

@BeanProperty(bound=false) public int getTabCount()
Returns the number of tabs in this `tabbedpane`.

Returns:
  an integer specifying the number of tabbed pages

### getTabRunCount

@BeanProperty(bound=false) public int getTabRunCount()
Returns the number of tab runs currently used to display the tabs.

Returns:
  an integer giving the number of rows if the `tabPlacement` is `TOP` or `BOTTOM` and the number of columns if `tabPlacement` is `LEFT` or `RIGHT`, or 0 if there is no UI set on this `tabbedpane`

### getTitleAt

public String getTitleAt(int index)
Returns the tab title at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the title at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setTitleAt(int, String)`

### getIconAt

public Icon getIconAt(int index)
Returns the tab icon at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the icon at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setIconAt(int, Icon)`

### getDisabledIconAt

public Icon getDisabledIconAt(int index)
Returns the tab disabled icon at `index`. If the tab disabled icon doesn't exist at `index` this will forward the call to the look and feel to construct an appropriate disabled Icon from the corresponding enabled Icon. Some look and feels might not render the disabled Icon, in which case it won't be created.

Parameters:
  `index` - the index of the item being queried
Returns:
  the icon at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setDisabledIconAt(int, Icon)`

### getToolTipTextAt

public String getToolTipTextAt(int index)
Returns the tab tooltip text at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  a string containing the tool tip text at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
Since:
  1.3
See Also:
  - `setToolTipTextAt(int, String)`

### getBackgroundAt

public Color getBackgroundAt(int index)
Returns the tab background color at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the `Color` of the tab background at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setBackgroundAt(int, Color)`

### getForegroundAt

public Color getForegroundAt(int index)
Returns the tab foreground color at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the `Color` of the tab foreground at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setForegroundAt(int, Color)`

### isEnabledAt

public boolean isEnabledAt(int index)
Returns whether or not the tab at `index` is currently enabled.

Parameters:
  `index` - the index of the item being queried
Returns:
  true if the tab at `index` is enabled; false otherwise
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setEnabledAt(int, boolean)`

### getComponentAt

public Component getComponentAt(int index)
Returns the component at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the `Component` at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setComponentAt(int, Component)`

### getMnemonicAt

public int getMnemonicAt(int tabIndex)
Returns the keyboard mnemonic for accessing the specified tab. The mnemonic is the key which when combined with the look and feel's mouseless modifier (usually Alt) will activate the specified tab.

Parameters:
  `tabIndex` - the index of the tab that the mnemonic refers to
Returns:
  the key code which represents the mnemonic; -1 if a mnemonic is not specified for the tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range (`tabIndex` < 0 || `tabIndex` >= tab count)
Since:
  1.4
See Also:
  - `setDisplayedMnemonicIndexAt(int,int)`
  - `setMnemonicAt(int,int)`

### getDisplayedMnemonicIndexAt

public int getDisplayedMnemonicIndexAt(int tabIndex)
Returns the character, as an index, that the look and feel should provide decoration for as representing the mnemonic character.

Parameters:
  `tabIndex` - the index of the tab that the mnemonic refers to
Returns:
  index representing mnemonic character if one exists; otherwise returns -1
Throws:
  `IndexOutOfBoundsException` - if index is out of range (`tabIndex` < 0 || `tabIndex` >= tab count)
Since:
  1.4
See Also:
  - `setDisplayedMnemonicIndexAt(int,int)`
  - `setMnemonicAt(int,int)`

### getBoundsAt

public Rectangle getBoundsAt(int index)
Returns the tab bounds at `index`. If the tab at this index is not currently visible in the UI, then returns `null`. If there is no UI set on this `tabbedpane`, then returns `null`.

Parameters:
  `index` - the index to be queried
Returns:
  a `Rectangle` containing the tab bounds at `index`, or `null` if tab at `index` is not currently visible in the UI, or if there is no UI set on this `tabbedpane`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`

### setTitleAt

@BeanProperty(preferred=true, visualUpdate=true, description="The title at the specified tab index.") public void setTitleAt(int index, String title)
Sets the title at `index` to `title` which can be `null`. The title is not shown if a tab component for this tab was specified. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index where the title should be set
  `title` - the title to be displayed in the tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `getTitleAt(int)`
  - `setTabComponentAt(int, Component)`

### setIconAt

@BeanProperty(preferred=true, visualUpdate=true, description="The icon at the specified tab index.") public void setIconAt(int index, Icon icon)
Sets the icon at `index` to `icon` which can be `null`. This does not set disabled icon at `icon`. If the new Icon is different than the current Icon and disabled icon is not explicitly set, the LookAndFeel will be asked to generate a disabled Icon. To explicitly set disabled icon, use `setDisableIconAt()`. The icon is not shown if a tab component for this tab was specified. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index where the icon should be set
  `icon` - the icon to be displayed in the tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `setDisabledIconAt(int, Icon)`
  - `getIconAt(int)`
  - `getDisabledIconAt(int)`
  - `setTabComponentAt(int, Component)`

### setDisabledIconAt

@BeanProperty(preferred=true, visualUpdate=true, description="The disabled icon at the specified tab index.") public void setDisabledIconAt(int index, Icon disabledIcon)
Sets the disabled icon at `index` to `icon` which can be `null`. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index where the disabled icon should be set
  `disabledIcon` - the icon to be displayed in the tab when disabled
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `getDisabledIconAt(int)`

### setToolTipTextAt

@BeanProperty(preferred=true, description="The tooltip text at the specified tab index.") public void setToolTipTextAt(int index, String toolTipText)
Sets the tooltip text at `index` to `toolTipText` which can be `null`. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index where the tooltip text should be set
  `toolTipText` - the tooltip text to be displayed for the tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
Since:
  1.3
See Also:
  - `getToolTipTextAt(int)`

### setBackgroundAt

@BeanProperty(preferred=true, visualUpdate=true, description="The background color at the specified tab index.") public void setBackgroundAt(int index, Color background)
Sets the background color at `index` to `background` which can be `null`, in which case the tab's background color will default to the background color of the `tabbedpane`. An internal exception is raised if there is no tab at that index.

It is up to the look and feel to honor this property, some may choose to ignore it.

Parameters:
  `index` - the tab index where the background should be set
  `background` - the color to be displayed in the tab's background
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `getBackgroundAt(int)`

### setForegroundAt

@BeanProperty(preferred=true, visualUpdate=true, description="The foreground color at the specified tab index.") public void setForegroundAt(int index, Color foreground)
Sets the foreground color at `index` to `foreground` which can be `null`, in which case the tab's foreground color will default to the foreground color of this `tabbedpane`. An internal exception is raised if there is no tab at that index.

It is up to the look and feel to honor this property, some may choose to ignore it.

Parameters:
  `index` - the tab index where the foreground should be set
  `foreground` - the color to be displayed as the tab's foreground
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `getForegroundAt(int)`

### setEnabledAt

public void setEnabledAt(int index, boolean enabled)
Sets whether or not the tab at `index` is enabled. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index which should be enabled/disabled
  `enabled` - whether or not the tab should be enabled
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `isEnabledAt(int)`

### setComponentAt

@BeanProperty(visualUpdate=true, description="The component at the specified tab index.") public void setComponentAt(int index, Component component)
Sets the component at `index` to `component`. An internal exception is raised if there is no tab at that index.

Parameters:
  `index` - the tab index where this component is being placed
  `component` - the component for the tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
See Also:
  - `getComponentAt(int)`

### setDisplayedMnemonicIndexAt

@BeanProperty(visualUpdate=true, description="the index into the String to draw the keyboard character mnemonic at") public void setDisplayedMnemonicIndexAt(int tabIndex, int mnemonicIndex)
Provides a hint to the look and feel as to which character in the text should be decorated to represent the mnemonic. Not all look and feels may support this. A value of -1 indicates either there is no mnemonic for this tab, or you do not wish the mnemonic to be displayed for this tab.

The value of this is updated as the properties relating to the mnemonic change (such as the mnemonic itself, the text...). You should only ever have to call this if you do not wish the default character to be underlined. For example, if the text at tab index 3 was 'Apple Price', with a mnemonic of 'p', and you wanted the 'P' to be decorated, as 'Apple Price', you would have to invoke `setDisplayedMnemonicIndex(3, 6)` after invoking `setMnemonicAt(3, KeyEvent.VK_P)`.

Note that it is the programmer's responsibility to ensure that each tab has a unique mnemonic or unpredictable results may occur.

Parameters:
  `tabIndex` - the index of the tab that the mnemonic refers to
  `mnemonicIndex` - index into the `String` to underline
Throws:
  `IndexOutOfBoundsException` - if `tabIndex` is out of range (`tabIndex < 0 || tabIndex >= tab count`)
  `IllegalArgumentException` - will be thrown if `mnemonicIndex` is >= length of the tab title , or < -1
Since:
  1.4
See Also:
  - `setMnemonicAt(int,int)`
  - `getDisplayedMnemonicIndexAt(int)`

### setMnemonicAt

@BeanProperty(visualUpdate=true, description="The keyboard mnenmonic, as a KeyEvent VK constant, for the specified tab") public void setMnemonicAt(int tabIndex, int mnemonic)
Sets the keyboard mnemonic for accessing the specified tab. The mnemonic is the key which when combined with the look and feel's mouseless modifier (usually Alt) will activate the specified tab.

A mnemonic must correspond to a single key on the keyboard and should be specified using one of the `VK_XXX` keycodes defined in `java.awt.event.KeyEvent` or one of the extended keycodes obtained through `java.awt.event.KeyEvent.getExtendedKeyCodeForChar`. Mnemonics are case-insensitive, therefore a key event with the corresponding keycode would cause the button to be activated whether or not the Shift modifier was pressed.

This will update the displayed mnemonic property for the specified tab.

Parameters:
  `tabIndex` - the index of the tab that the mnemonic refers to
  `mnemonic` - the key code which represents the mnemonic
Throws:
  `IndexOutOfBoundsException` - if `tabIndex` is out of range (`tabIndex < 0 || tabIndex >= tab count`)
Since:
  1.4
See Also:
  - `getMnemonicAt(int)`
  - `setDisplayedMnemonicIndexAt(int,int)`

### indexOfTab

public int indexOfTab(String title)
Returns the first tab index with a given `title`, or -1 if no tab has this title.

Parameters:
  `title` - the title for the tab
Returns:
  the first tab index which matches `title`, or -1 if no tab has this title

### indexOfTab

public int indexOfTab(Icon icon)
Returns the first tab index with a given `icon`, or -1 if no tab has this icon.

Parameters:
  `icon` - the icon for the tab
Returns:
  the first tab index which matches `icon`, or -1 if no tab has this icon

### indexOfComponent

public int indexOfComponent(Component component)
Returns the index of the tab for the specified component. Returns -1 if there is no tab for this component.

Parameters:
  `component` - the component for the tab
Returns:
  the first tab which matches this component, or -1 if there is no tab for this component

### indexAtLocation

public int indexAtLocation(int x, int y)
Returns the tab index corresponding to the tab whose bounds intersect the specified location. Returns -1 if no tab intersects the location.

Parameters:
  `x` - the x location relative to this tabbedpane
  `y` - the y location relative to this tabbedpane
Returns:
  the tab index which intersects the location, or -1 if no tab intersects the location
Since:
  1.4

### getToolTipText

public String getToolTipText(MouseEvent event)
Returns the tooltip text for the component determined by the mouse event location.

Overrides:
  `getToolTipText` in class `JComponent`
Parameters:
  `event` - the `MouseEvent` that tells where the cursor is lingering
Returns:
  the `String` containing the tooltip text

### paramString

protected String paramString()
Returns a string representation of this `JTabbedPane`. 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 JTabbedPane.

### getAccessibleContext

@BeanProperty(bound=false) public AccessibleContext getAccessibleContext()
Gets the AccessibleContext associated with this JTabbedPane. For tabbed panes, the AccessibleContext takes the form of an AccessibleJTabbedPane. A new AccessibleJTabbedPane instance is created if necessary.

Specified by:
  `getAccessibleContext` in interface `Accessible`
Overrides:
  `getAccessibleContext` in class `Component`
Returns:
  an AccessibleJTabbedPane that serves as the AccessibleContext of this JTabbedPane

### setTabComponentAt

@BeanProperty(preferred=true, visualUpdate=true, description="The tab component at the specified tab index.") public void setTabComponentAt(int index, Component component)
Sets the component that is responsible for rendering the title for the specified tab. A null value means `JTabbedPane` will render the title and/or icon for the specified tab. A non-null value means the component will render the title and `JTabbedPane` will not render the title and/or icon.

Note: The component must not be one that the developer has already added to the tabbed pane.

Parameters:
  `index` - the tab index where the component should be set
  `component` - the component to render the title for the specified tab
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
  `IllegalArgumentException` - if component has already been added to this `JTabbedPane`
Since:
  1.6
See Also:
  - `getTabComponentAt(int)`

### getTabComponentAt

public Component getTabComponentAt(int index)
Returns the tab component at `index`.

Parameters:
  `index` - the index of the item being queried
Returns:
  the tab component at `index`
Throws:
  `IndexOutOfBoundsException` - if index is out of range `(index < 0 || index >= tab count)`
Since:
  1.6
See Also:
  - `setTabComponentAt(int, Component)`

### indexOfTabComponent

public int indexOfTabComponent(Component tabComponent)
Returns the index of the tab for the specified tab component. Returns -1 if there is no tab for this tab component.

Parameters:
  `tabComponent` - the tab component for the tab
Returns:
  the first tab which matches this tab component, or -1 if there is no tab for this tab component
Since:
  1.6
See Also:
  - `setTabComponentAt(int, Component)`
  - `getTabComponentAt(int)`