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Java Standard Edition (SE)



Class JSeparator

  • All Implemented Interfaces:
    ImageObserver, MenuContainer, Serializable, Accessible, SwingConstants
    Direct Known Subclasses:
    JPopupMenu.Separator, JToolBar.Separator

    public class JSeparator
    extends JComponent
    implements SwingConstants, Accessible
    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.

    • Constructor Detail

      • JSeparator

        public JSeparator()
        Creates a new horizontal separator.
      • JSeparator

        public JSeparator(int orientation)
        Creates a new separator with the specified horizontal or vertical orientation.
        orientation - an integer specifying SwingConstants.HORIZONTAL or SwingConstants.VERTICAL
        IllegalArgumentException - if orientation is neither SwingConstants.HORIZONTAL nor SwingConstants.VERTICAL
    • Method Detail

      • getUI

        public SeparatorUI getUI()
        Returns the L&F object that renders this component.
        the SeparatorUI object that renders this component
      • getOrientation

        public int getOrientation()
        Returns the orientation of this separator.
        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.
        orientation - either SwingConstants.HORIZONTAL or SwingConstants.VERTICAL
        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.
        paramString in class JComponent
        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
        getAccessibleContext in class Component
        an AccessibleJSeparator that serves as the AccessibleContext of this JSeparator


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