Class JSeparator

JSeparator provides a general purpose component for implementing divider lines - most commonly used as a divider between menu items that breaks them up into logical groupings. Instead of using JSeparator directly, you can use the JMenu or JPopupMenu addSeparator method to create and add a separator. JSeparators may also be used elsewhere in a GUI wherever a visual divider is useful.

For more information and examples see How to Use Menus, a section in The Java Tutorial.

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.

Constructors

JSeparator

public JSeparator()

Creates a new horizontal separator.

JSeparator

public JSeparator(int orientation)

Creates a new separator with the specified horizontal or vertical orientation.

Parameters:

orientation - an integer specifying SwingConstants.HORIZONTAL or SwingConstants.VERTICAL

Throws:

IllegalArgumentException - if orientation is neither SwingConstants.HORIZONTAL nor SwingConstants.VERTICAL

Methods

getUI

public SeparatorUI getUI()

Returns the L&F object that renders this component.

Returns:

the SeparatorUI object that renders this component

setUI

public void setUI(SeparatorUI ui)

Sets the L&F object that renders this component.

Parameters:

ui - the SeparatorUI L&F object

See Also:

UIDefaults.getUI(javax.swing.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

public String getUIClassID()

Returns the name of the L&F class that renders this component.

Overrides:

getUIClassID in class JComponent

Returns:

the string "SeparatorUI"

See Also:

JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

getOrientation

public int getOrientation()

Returns the orientation of this separator.

Returns:

The value of the orientation property, one of the following constants defined in SwingConstants: VERTICAL, or HORIZONTAL.

See Also:

SwingConstants, setOrientation(int)

setOrientation

public void setOrientation(int orientation)

Sets the orientation of the separator. The default value of this property is HORIZONTAL.

Parameters:

orientation - either SwingConstants.HORIZONTAL or SwingConstants.VERTICAL

Throws:

IllegalArgumentException - if orientation is neither SwingConstants.HORIZONTAL nor SwingConstants.VERTICAL

See Also:

SwingConstants, getOrientation()

paramString

protected String paramString()

Returns a string representation of this JSeparator. 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 JSeparator

getAccessibleContext

public AccessibleContext getAccessibleContext()

Gets the AccessibleContext associated with this JSeparator. For separators, the AccessibleContext takes the form of an AccessibleJSeparator. A new AccessibleJSeparator instance is created if necessary.

Specified by:

getAccessibleContext in interface Accessible

Overrides:

getAccessibleContext in class Component

Returns:

an AccessibleJSeparator that serves as the AccessibleContext of this JSeparator