Java javax.swing Class JToolBar（JDK8）

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Java™ Platform
Standard Ed. 8

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Constr |
Method

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Constr |
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java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JToolBar

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible, SwingConstants
```
public class JToolBar
extends JComponent
implements SwingConstants, Accessible
```
JToolBar provides a component that is useful for displaying commonly used Actions or controls. For examples and information on using tool bars see How to Use Tool Bars, a section in The Java Tutorial.
With most look and feels, the user can drag out a tool bar into a separate window (unless the floatable property is set to false). For drag-out to work correctly, it is recommended that you add JToolBar instances to one of the four "sides" of a container whose layout manager is a BorderLayout, and do not add children to any of the other four "sides".

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.

See Also:

Action

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`JToolBar.AccessibleJToolBar` This class implements accessibility support for the `JToolBar` class.
`static class`	`JToolBar.Separator` A toolbar-specific separator.

Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary
- Fields inherited from class javax.swing.JComponent
  listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
- Fields inherited from class java.awt.Component
  accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
- Fields inherited from interface javax.swing.SwingConstants
  BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
- Fields inherited from interface java.awt.image.ImageObserver
  ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors
Constructor and Description
`JToolBar()` Creates a new tool bar; orientation defaults to `HORIZONTAL`.
`JToolBar(int orientation)` Creates a new tool bar with the specified `orientation`.
`JToolBar(String name)` Creates a new tool bar with the specified `name`.
`JToolBar(String name, int orientation)` Creates a new tool bar with a specified `name` and `orientation`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`JButton`	`add(Action a)` Adds a new `JButton` which dispatches the action.
`protected void`	`addImpl(Component comp, Object constraints, int index)` If a `JButton` is being added, it is initially set to be disabled.
`void`	`addSeparator()` Appends a separator of default size to the end of the tool bar.
`void`	`addSeparator(Dimension size)` Appends a separator of a specified size to the end of the tool bar.
`protected PropertyChangeListener`	`createActionChangeListener(JButton b)` Returns a properly configured `PropertyChangeListener` which updates the control as changes to the `Action` occur, or `null` if the default property change listener for the control is desired.
`protected JButton`	`createActionComponent(Action a)` Factory method which creates the `JButton` for `Action`s added to the `JToolBar`.
`AccessibleContext`	`getAccessibleContext()` Gets the AccessibleContext associated with this JToolBar.
`Component`	`getComponentAtIndex(int i)` Returns the component at the specified index.
`int`	`getComponentIndex(Component c)` Returns the index of the specified component.
`Insets`	`getMargin()` Returns the margin between the tool bar's border and its buttons.
`int`	`getOrientation()` Returns the current orientation of the tool bar.
`ToolBarUI`	`getUI()` Returns the tool bar's current UI.
`String`	`getUIClassID()` Returns the name of the L&F class that renders this component.
`boolean`	`isBorderPainted()` Gets the `borderPainted` property.
`boolean`	`isFloatable()` Gets the `floatable` property.
`boolean`	`isRollover()` Returns the rollover state.
`protected void`	`paintBorder(Graphics g)` Paints the tool bar's border if the `borderPainted` property is `true`.
`protected String`	`paramString()` Returns a string representation of this `JToolBar`.
`void`	`setBorderPainted(boolean b)` Sets the `borderPainted` property, which is `true` if the border should be painted.
`void`	`setFloatable(boolean b)` Sets the `floatable` property, which must be `true` for the user to move the tool bar.
`void`	`setLayout(LayoutManager mgr)` Sets the layout manager for this container.
`void`	`setMargin(Insets m)` Sets the margin between the tool bar's border and its buttons.
`void`	`setOrientation(int o)` Sets the orientation of the tool bar.
`void`	`setRollover(boolean rollover)` Sets the rollover state of this toolbar.
`void`	`setUI(ToolBarUI ui)` Sets the L&F object that renders this component.
`void`	`updateUI()` Notification from the `UIFactory` that the L&F has changed.

Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, 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, 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 inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, 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, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.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, 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, getPeer, 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, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - JToolBar
```
public JToolBar()
```
    Creates a new tool bar; orientation defaults to HORIZONTAL.
  - JToolBar
```
public JToolBar(int orientation)
```
    Creates a new tool bar with the specified orientation. The orientation must be either HORIZONTAL or VERTICAL.
    
    Parameters:
    
    orientation - the orientation desired
  - JToolBar
```
public JToolBar(String name)
```
    Creates a new tool bar with the specified name. The name is used as the title of the undocked tool bar. The default orientation is HORIZONTAL.
    
    Parameters:
    
    name - the name of the tool bar
    
    Since:
    
    1.3
  - JToolBar
```
public JToolBar(String name,
                int orientation)
```
    Creates a new tool bar with a specified name and orientation. All other constructors call this constructor. If orientation is an invalid value, an exception will be thrown.
    
    Parameters:
    
    name - the name of the tool bar
    
    orientation - the initial orientation -- it must be either HORIZONTAL or VERTICAL
    
    Throws:
    
    IllegalArgumentException - if orientation is neither HORIZONTAL nor VERTICAL
    
    Since:
    
    1.3
- Method Detail
  - getUI
```
public ToolBarUI getUI()
```
    Returns the tool bar's current UI.
    
    See Also:
    
    setUI(javax.swing.plaf.ToolBarUI)
  - setUI
```
public void setUI(ToolBarUI ui)
```
    Sets the L&F object that renders this component.
    
    Parameters:
    
    ui - the ToolBarUI L&F object
    
    See Also:
    
    UIDefaults.getUI(javax.swing.JComponent)
  - updateUI
```
public void updateUI()
```
    Notification from the UIFactory that the L&F has changed. Called to replace the UI with the latest version from the UIFactory.
    
    Overrides:
    
    updateUI in class JComponent
    
    See Also:
    
    JComponent.updateUI()
  - getUIClassID
```
public String getUIClassID()
```
    Returns the name of the L&F class that renders this component.
    
    Overrides:
    
    getUIClassID in class JComponent
    
    Returns:
    
    the string "ToolBarUI"
    
    See Also:
    
    JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)
  - getComponentIndex
```
public int getComponentIndex(Component c)
```
    Returns the index of the specified component. (Note: Separators occupy index positions.)
    
    Parameters:
    
    c - the Component to find
    
    Returns:
    
    an integer indicating the component's position, where 0 is first
  - getComponentAtIndex
```
public Component getComponentAtIndex(int i)
```
    Returns the component at the specified index.
    
    Parameters:
    
    i - the component's position, where 0 is first
    
    Returns:
    
    the Component at that position, or null for an invalid index
  - setMargin
```
public void setMargin(Insets m)
```
    Sets the margin between the tool bar's border and its buttons. Setting to null causes the tool bar to use the default margins. The tool bar's default Border object uses this value to create the proper margin. However, if a non-default border is set on the tool bar, it is that Border object's responsibility to create the appropriate margin space (otherwise this property will effectively be ignored).
    
    Parameters:
    
    m - an Insets object that defines the space between the border and the buttons
    
    See Also:
    
    Insets
  - getMargin
```
public Insets getMargin()
```
    Returns the margin between the tool bar's border and its buttons.
    
    Returns:
    
    an Insets object containing the margin values
    
    See Also:
    
    Insets
  - isBorderPainted
```
public boolean isBorderPainted()
```
    Gets the borderPainted property.
    
    Returns:
    
    the value of the borderPainted property
    
    See Also:
    
    setBorderPainted(boolean)
  - setBorderPainted
```
public void setBorderPainted(boolean b)
```
    Sets the borderPainted property, which is true if the border should be painted. The default value for this property is true. Some look and feels might not implement painted borders; they will ignore this property.
    
    Parameters:
    
    b - if true, the border is painted
    
    See Also:
    
    isBorderPainted()
  - paintBorder
```
protected void paintBorder(Graphics g)
```
    Paints the tool bar's border if the borderPainted property is true.
    
    Overrides:
    
    paintBorder in class JComponent
    
    Parameters:
    
    g - the Graphics context in which the painting is done
    
    See Also:
    
    JComponent.paint(java.awt.Graphics), JComponent.setBorder(javax.swing.border.Border)
  - isFloatable
```
public boolean isFloatable()
```
    Gets the floatable property.
    
    Returns:
    
    the value of the floatable property
    
    See Also:
    
    setFloatable(boolean)
  - setFloatable
```
public void setFloatable(boolean b)
```
    Sets the floatable property, which must be true for the user to move the tool bar. Typically, a floatable tool bar can be dragged into a different position within the same container or out into its own window. The default value of this property is true. Some look and feels might not implement floatable tool bars; they will ignore this property.
    
    Parameters:
    
    b - if true, the tool bar can be moved; false otherwise
    
    See Also:
    
    isFloatable()
  - getOrientation
```
public int getOrientation()
```
    Returns the current orientation of the tool bar. The value is either HORIZONTAL or VERTICAL.
    
    Returns:
    
    an integer representing the current orientation -- either HORIZONTAL or VERTICAL
    
    See Also:
    
    setOrientation(int)
  - setOrientation
```
public void setOrientation(int o)
```
    Sets the orientation of the tool bar. The orientation must have either the value HORIZONTAL or VERTICAL. If orientation is an invalid value, an exception will be thrown.
    
    Parameters:
    
    o - the new orientation -- either HORIZONTAL or VERTICAL
    
    Throws:
    
    IllegalArgumentException - if orientation is neither HORIZONTAL nor VERTICAL
    
    See Also:
    
    getOrientation()
  - setRollover
```
public void setRollover(boolean rollover)
```
    Sets the rollover state of this toolbar. If the rollover state is true then the border of the toolbar buttons will be drawn only when the mouse pointer hovers over them. The default value of this property is false.
    The implementation of a look and feel may choose to ignore this property.
    
    Parameters:
    
    rollover - true for rollover toolbar buttons; otherwise false
    
    Since:
    
    1.4
  - isRollover
```
public boolean isRollover()
```
    Returns the rollover state.
    
    Returns:
    
    true if rollover toolbar buttons are to be drawn; otherwise false
    
    Since:
    
    1.4
    
    See Also:
    
    setRollover(boolean)
  - addSeparator
```
public void addSeparator()
```
    Appends a separator of default size to the end of the tool bar. The default size is determined by the current look and feel.
  - addSeparator
```
public void addSeparator(Dimension size)
```
    Appends a separator of a specified size to the end of the tool bar.
    
    Parameters:
    
    size - the Dimension of the separator
  - add
```
public JButton add(Action a)
```
    Adds a new JButton which dispatches the action.
    
    Parameters:
    
    a - the Action object to add as a new menu item
    
    Returns:
    
    the new button which dispatches the action
  - createActionComponent
```
protected JButton createActionComponent(Action a)
```
    Factory method which creates the JButton for Actions added to the JToolBar. The default name is empty if a null action is passed.
    
    Parameters:
    
    a - the Action for the button to be added
    
    Returns:
    
    the newly created button
    
    Since:
    
    1.3
    
    See Also:
    
    Action
  - createActionChangeListener
```
protected PropertyChangeListener createActionChangeListener(JButton b)
```
    Returns a properly configured PropertyChangeListener which updates the control as changes to the Action occur, or null if the default property change listener for the control is desired.
    
    Returns:
    
    null
  - addImpl
```
protected void addImpl(Component comp,
                       Object constraints,
                       int index)
```
    If a JButton is being added, it is initially set to be disabled.
    
    Overrides:
    
    addImpl in class Container
    
    Parameters:
    
    comp - the component to be enhanced
    
    constraints - the constraints to be enforced on the component
    
    index - the index of the component
    
    See Also:
    
    Container.add(Component), Container.add(Component, int), Container.add(Component, java.lang.Object), Container.invalidate(), LayoutManager, LayoutManager2
  - paramString
```
protected String paramString()
```
    Returns a string representation of this JToolBar. 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 JToolBar.
  - setLayout
```
public void setLayout(LayoutManager mgr)
```
    Description copied from class: Container
    
    Sets the layout manager for this container.
    This method changes layout-related information, and therefore, invalidates the component hierarchy.
    
    Overrides:
    
    setLayout in class Container
    
    Parameters:
    
    mgr - the specified layout manager
    
    See Also:
    
    Container.doLayout(), Container.getLayout(), Container.invalidate()
  - getAccessibleContext
```
public AccessibleContext getAccessibleContext()
```
    Gets the AccessibleContext associated with this JToolBar. For tool bars, the AccessibleContext takes the form of an AccessibleJToolBar. A new AccessibleJToolBar instance is created if necessary.
    
    Specified by:
    
    getAccessibleContext in interface Accessible
    
    Overrides:
    
    getAccessibleContext in class Component
    
    Returns:
    
    an AccessibleJToolBar that serves as the AccessibleContext of this JToolBar

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Java™ Platform
Standard Ed. 8

All Classes

Summary:
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Field |
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Method

Detail:
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Method

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Java javax.swing Class JToolBar（JDK8）

Class JToolBar

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class java.awt.Component

Field Summary

Fields inherited from class javax.swing.JComponent

Fields inherited from class java.awt.Component

Fields inherited from interface javax.swing.SwingConstants

Fields inherited from interface java.awt.image.ImageObserver

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JComponent

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Constructor Detail

JToolBar

JToolBar

JToolBar

JToolBar

Method Detail

getUI

setUI

updateUI

getUIClassID

getComponentIndex

getComponentAtIndex

setMargin

getMargin

isBorderPainted

setBorderPainted

paintBorder

isFloatable

setFloatable

getOrientation

setOrientation

setRollover

isRollover

addSeparator

addSeparator

add

createActionComponent

createActionChangeListener

addImpl

paramString

setLayout

getAccessibleContext