OpenJDK 27 · javax.swing.JSlider · APIdia, the JavaDoc alternative

Modifier and Type	Class and Description
protected class	JSlider.AccessibleJSlider This class implements accessibility support for the `JSlider` class.
private class	JSlider.ModelListener We pass Change events along to the listeners with the slider (instead of the model itself) as the event source.

Modifier and Type	Field and Description
protected transient ChangeEvent	changeEvent Only one `ChangeEvent` is needed per slider instance since the event's only (read-only) state is the source property.
protected ChangeListener	changeListener The changeListener (no suffix) is the listener we add to the slider's model.
private boolean	isInverted
private Dictionary<K, V>	labelTable `Dictionary` of what labels to draw at which values
protected int	majorTickSpacing The number of values between the major tick marks -- the larger marks that break up the minor tick marks.
protected int	minorTickSpacing The number of values between the minor tick marks -- the smaller marks that occur between the major tick marks.
protected int	orientation Whether the slider is horizontal or vertical The default is horizontal.
private boolean	paintLabels
private boolean	paintTicks
private boolean	paintTrack
protected BoundedRangeModel	sliderModel The data model that handles the numeric maximum value, minimum value, and current-position value for the slider.
protected boolean	snapToTicks If true, the knob (and the data value it represents) resolve to the closest tick mark next to where the user positioned the knob.
pack-priv boolean	snapToValue If true, the knob (and the data value it represents) resolve to the closest slider value next to where the user positioned the knob.
private static final String	uiClassID Hides javax.swing.JComponent.uiClassID.

Access	Constructor and Description
public	JSlider() Creates a horizontal slider with the range 0 to 100 and an initial value of 50.
public	JSlider(int the orientation of the slider orientation) Creates a slider using the specified orientation with the range `0` to `100` and an initial value of `50`.
public	JSlider(int the minimum value of the slider min, int the maximum value of the slider max) Creates a horizontal slider using the specified min and max with an initial value equal to the average of the min plus max.
public	JSlider(int the minimum value of the slider min, int the maximum value of the slider max, int the initial value of the slider value) Creates a horizontal slider using the specified min, max and value.
public	JSlider(int the orientation of the slider orientation, int the minimum value of the slider min, int the maximum value of the slider max, int the initial value of the slider value) Creates a slider with the specified orientation and the specified minimum, maximum, and initial values.
public	JSlider(BoundedRangeModel a `BoundedRangeModel` for the slider brm) Creates a horizontal slider using the specified BoundedRangeModel.

Method Summary

Modifier and Type	Method and Description
public void	addChangeListener(ChangeListener the ChangeListener to add l) Adds a ChangeListener to the slider.
private void	checkOrientation(int orientation)
protected ChangeListener	Returns: a instance of new `ChangeListener` createChangeListener() Subclasses that want to handle `ChangeEvent`s from the model differently can override this to return an instance of a custom `ChangeListener` implementation.
public Hashtable<Integer, JComponent>	Returns: a new `Hashtable` of labels createStandardLabels(int distance between labels in the generated hashtable increment) Creates a `Hashtable` of numerical text labels, starting at the slider minimum, and using the increment specified.
public Hashtable<Integer, JComponent>	Returns: a new `Hashtable` of labels createStandardLabels(int distance between labels in the generated hashtable increment, int value at which the labels will begin start) Creates a `Hashtable` of numerical text labels, starting at the starting point specified, and using the increment specified.
protected void	fireStateChanged() Send a `ChangeEvent`, whose source is this `JSlider`, to all `ChangeListener`s that have registered interest in `ChangeEvent`s.
public AccessibleContext	Returns: an AccessibleJSlider that serves as the AccessibleContext of this JSlider getAccessibleContext() Overrides java.awt.Component.getAccessibleContext. Implements javax.accessibility.Accessible.getAccessibleContext. Gets the AccessibleContext associated with this JSlider.
public ChangeListener[]	Returns: all of the `ChangeListener`s added or an empty array if no listeners have been added getChangeListeners() Returns an array of all the `ChangeListener`s added to this JSlider with addChangeListener().
public int	Returns: an int representing the extent getExtent() Returns the "extent" from the `BoundedRangeModel`.
public boolean	Returns: true if the slider values are reversed from their normal order getInverted() Returns true if the value-range shown for the slider is reversed,
public Dictionary<K, V>	Returns: the `Dictionary` containing labels and where to draw them getLabelTable() Returns the dictionary of what labels to draw at which values.
public int	Returns: the number of values between major ticks getMajorTickSpacing() This method returns the major tick spacing.
public int	Returns: the value of the model's maximum property getMaximum() Returns the maximum value supported by the slider from the `BoundedRangeModel`.
public int	Returns: the value of the model's minimum property getMinimum() Returns the minimum value supported by the slider from the `BoundedRangeModel`.
public int	Returns: the number of values between minor ticks getMinorTickSpacing() This method returns the minor tick spacing.
public BoundedRangeModel	Returns: the data model for this component getModel() Returns the `BoundedRangeModel` that handles the slider's three fundamental properties: minimum, maximum, value.
public int	Returns: `SwingConstants.VERTICAL` or `SwingConstants.HORIZONTAL` getOrientation() Return this slider's vertical or horizontal orientation.
public boolean	Returns: true if labels are painted, else false getPaintLabels() Tells if labels are to be painted.
public boolean	Returns: true if tick marks are painted, else false getPaintTicks() Tells if tick marks are to be painted.
public boolean	Returns: true if track is painted, else false getPaintTrack() Tells if the track (area the slider slides in) is to be painted.
public boolean	Returns: true if the value snaps to the nearest tick mark, else false getSnapToTicks() Returns true if the knob (and the data value it represents) resolve to the closest tick mark next to where the user positioned the knob.
pack-priv boolean	Returns: true if the value snaps to the nearest slider value, else false getSnapToValue() Returns true if the knob (and the data value it represents) resolve to the closest slider value next to where the user positioned the knob.
public SliderUI	Returns: the SliderUI object that implements the Slider L&F getUI() Overrides javax.swing.JComponent.getUI. Gets the UI object which implements the L&F for this component.
public String	Returns: the string "SliderUI" getUIClassID() Overrides javax.swing.JComponent.getUIClassID. Returns the name of the L&F class that renders this component.
public int	Returns: the current value of the slider getValue() Returns the slider's current value from the `BoundedRangeModel`.
public boolean	Returns: the value of the model's `valueIsAdjusting` property getValueIsAdjusting() Returns the `valueIsAdjusting` property from the model.
public boolean	imageUpdate(Image img, int infoflags, int x, int y, int w, int h) Overrides java.awt.Component.imageUpdate. Implements java.awt.image.ImageObserver.imageUpdate. Repaints the component when the image has changed.
protected String	Returns: a string representation of this JSlider. paramString() Overrides javax.swing.JComponent.paramString. Returns a string representation of this JSlider.
public void	removeChangeListener(ChangeListener the ChangeListener to remove l) Removes a ChangeListener from the slider.
public void	setExtent(int the new extent extent) Sets the size of the range "covered" by the knob.
public void	setFont(Font font) Overrides javax.swing.JComponent.setFont. Sets the font for this component.
public void	setInverted(boolean true to reverse the slider values from their normal order b) Specify true to reverse the value-range shown for the slider and false to put the value range in the normal order.
public void	setLabelTable(Dictionary<K, V> new `Dictionary` of labels, or `null` to remove all labels labels) Used to specify what label will be drawn at any given value.
public void	setMajorTickSpacing(int new value for the `majorTickSpacing` property n) This method sets the major tick spacing.
public void	setMaximum(int the new maximum maximum) Sets the slider's maximum value to `maximum`.
public void	setMinimum(int the new minimum minimum) Sets the slider's minimum value to `minimum`.
public void	setMinorTickSpacing(int new value for the `minorTickSpacing` property n) This method sets the minor tick spacing.
public void	setModel(BoundedRangeModel the new, `non-null` `BoundedRangeModel` to use newModel) Sets the `BoundedRangeModel` that handles the slider's three fundamental properties: minimum, maximum, value.
public void	setOrientation(int `HORIZONTAL` or `VERTICAL` orientation) Set the slider's orientation to either `SwingConstants.VERTICAL` or `SwingConstants.HORIZONTAL`.
public void	setPaintLabels(boolean whether or not to paint labels b) Determines whether labels are painted on the slider.
public void	setPaintTicks(boolean whether or not tick marks should be painted b) Determines whether tick marks are painted on the slider.
public void	setPaintTrack(boolean whether or not to paint the slider track b) Determines whether the track is painted on the slider.
public void	setSnapToTicks(boolean true to snap the knob to the nearest tick mark b) Specifying true makes the knob (and the data value it represents) resolve to the closest tick mark next to where the user positioned the knob.
pack-priv void	setSnapToValue(boolean true to snap the knob to the nearest slider value b) Specifying true makes the knob (and the data value it represents) resolve to the closest slider value next to where the user positioned the knob.
public void	setUI(SliderUI the SliderUI L&F object ui) Sets the UI object which implements the L&F for this component.
public void	setValue(int the new value n) Sets the slider's current value to `n`.
public void	setValueIsAdjusting(boolean the new value for the `valueIsAdjusting` property b) Sets the model's `valueIsAdjusting` property.
private void	updateLabelSizes()
protected void	updateLabelUIs() Updates the UIs for the labels in the label table by calling `updateUI` on each label.
public void	updateUI() Overrides javax.swing.JComponent.updateUI. Resets the UI property to a value from the current look and feel.
private void	writeObject(ObjectOutputStream s) Hides javax.swing.JComponent.writeObject. See readObject() and writeObject() in JComponent for more information about serialization in Swing.

Inherited from javax.swing.JComponent:: _paintImmediately addAncestorListener addNotify addVetoableChangeListener alwaysOnTop checkIfChildObscuredBySibling clientPropertyChanged componentInputMapChanged computeVisibleRect computeVisibleRect compWriteObjectNotify contains createToolTip disable dndDone dropLocationForPoint enable firePropertyChange firePropertyChange firePropertyChange fireVetoableChange getActionForKeyStroke getActionMap getActionMap getAlignmentX getAlignmentY getAncestorListeners getAutoscrolls getBaseline getBaselineResizeBehavior getBorder getBounds getClientProperty getComponentGraphics getComponentPopupMenu getConditionForKeyStroke getCreatedDoubleBuffer getDebugGraphicsOptions getDefaultLocale getFontMetrics getGraphics getGraphicsInvoked getHeight getInheritsPopupMenu getInputMap getInputMap getInputMap getInputVerifier getInsets getInsets getListeners getLocation getManagingFocusBackwardTraversalKeys getManagingFocusForwardTraversalKeys getMaximumSize getMinimumSize getNextFocusableComponent getPopupLocation getPreferredSize getRegisteredKeyStrokes getRootPane getSize getToolTipLocation getToolTipText getToolTipText getTopLevelAncestor getTransferHandler getVerifyInputWhenFocusTarget getVetoableChangeListeners getVisibleRect getWidth getWriteObjCounter getX getY grabFocus hide isDoubleBuffered isLightweightComponent isManagingFocus isOpaque isOptimizedDrawingEnabled isPainting isPaintingForPrint isPaintingOrigin isPaintingTile isRequestFocusEnabled isValidateRoot paint paintBorder paintChildren paintComponent paintForceDoubleBuffered paintImmediately paintImmediately paintToOffscreen print printAll printBorder printChildren printComponent processComponentKeyEvent processKeyBinding processKeyBindings processKeyBindingsForAllComponents processKeyEvent processMouseEvent processMouseMotionEvent putClientProperty rectangleIsObscured registerKeyboardAction registerKeyboardAction removeAncestorListener removeNotify removeVetoableChangeListener repaint repaint requestDefaultFocus requestFocus requestFocus requestFocusInWindow requestFocusInWindow resetKeyboardActions reshape revalidate safelyGetGraphics safelyGetGraphics scrollRectToVisible setActionMap setAlignmentX setAlignmentY setAutoscrolls setBackground setBorder setComponentPopupMenu setCreatedDoubleBuffer setDebugGraphicsOptions setDefaultLocale setDoubleBuffered setDropLocation setEnabled setFocusTraversalKeys setForeground setInheritsPopupMenu setInputMap setInputVerifier setMaximumSize setMinimumSize setNextFocusableComponent setOpaque setPaintingChild setPreferredSize setRequestFocusEnabled setToolTipText setTransferHandler setUI setUIProperty setVerifyInputWhenFocusTarget setVisible setWriteObjCounter shouldDebugGraphics superProcessMouseMotionEvent unregisterKeyboardAction update

public Class JSlider

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