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java.lang.Object | +--java.awt.Component | +--java.awt.Container | +--javax.swing.JComponent | +--javax.swing.AbstractButton | +--javax.swing.JToggleButton | +--javax.swing.JRadioButton
An implementation of a radio button -- an item that can be selected or
deselected, and which displays its state to the user.
Used with a ButtonGroup
object to create a group of buttons
in which only one button at a time can be selected. (Create a ButtonGroup
object and use its add
method to include the JRadioButton objects
in the group.)
Note:
The ButtonGroup object is a logical grouping -- not a physical grouping. Tocreate a button panel, you should still create aJPanel
or similar container-object and add aBorder
to it to set it off from surrounding components.See How to Use Radio Buttons in The Java Tutorial for further documentation.
For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JRadioButton key assignments.
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. A future release of Swing will provide support for long term persistence.
- See Also:
ButtonGroup
,JCheckBox
, Serialized Form
Inner Class Summary protected class
JRadioButton.AccessibleJRadioButton
The class used to obtain the accessible role for this object.
Inner classes inherited from class javax.swing.JToggleButton JToggleButton.AccessibleJToggleButton, JToggleButton.ToggleButtonModel
Inner classes inherited from class javax.swing.AbstractButton AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener
Inner classes inherited from class javax.swing.JComponent JComponent.AccessibleJComponent
Fields inherited from class javax.swing.JComponent accessibleContext, 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 BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
Constructor Summary JRadioButton()
Creates an initially unselected radio button with no set text.JRadioButton(Icon icon)
Creates an initially unselected radio button with the specified image but no text.JRadioButton(Icon icon, boolean selected)
Creates a radio button with the specified image and selection state, but no text.JRadioButton(java.lang.String text)
Creates an unselected radio button with the specified text.JRadioButton(java.lang.String text, boolean selected)
Creates a radio button with the specified text and selection state.JRadioButton(java.lang.String text, Icon icon)
Creates a radio button that has the specified text and image, and that is initially unselected.JRadioButton(java.lang.String text, Icon icon, boolean selected)
Creates a radio button that has the specified text, image, and selection state.
Method Summary AccessibleContext
getAccessibleContext()
Get the AccessibleContext associated with this JComponentjava.lang.String
getUIClassID()
Returns the name of the L&F class that renders this component.protected java.lang.String
paramString()
Returns a string representation of this JRadioButton.void
updateUI()
Notification from the UIFactory that the L&F has changed.
Methods inherited from class java.awt.Container add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setLayout, validate, validateTree
Methods inherited from class java.awt.Component action, add, addComponentListener, addFocusListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, getBackground, getBounds, getColorModel, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hide, imageUpdate, inside, isEnabled, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setCursor, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus
Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Constructor Detail JRadioButton
public JRadioButton()
- Creates an initially unselected radio button with no set text.
JRadioButton
public JRadioButton(Icon icon)
- Creates an initially unselected radio button with the specified image but no text.
- Parameters:
icon
- the image that the button should display
JRadioButton
public JRadioButton(Icon icon, boolean selected)
- Creates a radio button with the specified image and selection state, but no text.
- Parameters:
icon
- the image that the button should displayselected
- if true, the button is initially selected; otherwise, the button is initially unselected
JRadioButton
public JRadioButton(java.lang.String text)
- Creates an unselected radio button with the specified text.
- Parameters:
text
- the string displayed on the radio button
JRadioButton
public JRadioButton(java.lang.String text, boolean selected)
- Creates a radio button with the specified text and selection state.
- Parameters:
text
- the string displayed on the radio buttonselected
- if true, the button is initially selected; otherwise, the button is initially unselected
JRadioButton
public JRadioButton(java.lang.String text, Icon icon)
- Creates a radio button that has the specified text and image, and that is initially unselected.
- Parameters:
text
- the string displayed on the radio buttonicon
- the image that the button should display
JRadioButton
public JRadioButton(java.lang.String text, Icon icon, boolean selected)
- Creates a radio button that has the specified text, image, and selection state.
- Parameters:
text
- the string displayed on the radio buttonicon
- the image that the button should display
Method Detail updateUI
public void updateUI()
- Notification from the UIFactory that the L&F has changed.
- Overrides:
- updateUI in class JToggleButton
- See Also:
JComponent.updateUI()
getUIClassID
public java.lang.String getUIClassID()
- Returns the name of the L&F class that renders this component.
- Returns:
- String "RadioButtonUI"
- Overrides:
- getUIClassID in class JToggleButton
- See Also:
JComponent.getUIClassID()
,UIDefaults.getUI(javax.swing.JComponent)
paramString
protected java.lang.String paramString()
- Returns a string representation of this JRadioButton. 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
.Overriding paramString() to provide information about the specific new aspects of the JFC components.
- Returns:
- a string representation of this JRadioButton.
- Overrides:
- paramString in class JToggleButton
getAccessibleContext
public AccessibleContext getAccessibleContext()
- Get the AccessibleContext associated with this JComponent
- Specified by:
- getAccessibleContext in interface Accessible
- Returns:
- the AccessibleContext of this JComponent
- Overrides:
- getAccessibleContext in class JToggleButton
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