Module java.desktop
Package java.awt.event

Interface ContainerListener

All Superinterfaces:
EventListener
All Known Implementing Classes:
AWTEventMulticaster, BasicToolBarUI.ToolBarContListener, Container.AccessibleAWTContainer.AccessibleContainerHandler, ContainerAdapter, JComponent.AccessibleJComponent.AccessibleContainerHandler, MetalToolBarUI.MetalContainerListener
public interface ContainerListener
extends EventListener
The listener interface for receiving container events. The class that is interested in processing a container event either implements this interface (and all the methods it contains) or extends the abstract ContainerAdapter class (overriding only the methods of interest). The listener object created from that class is then registered with a component using the component's addContainerListener method. When the container's contents change because a component has been added or removed, the relevant method in the listener object is invoked, and the ContainerEvent is passed to it.

Container events are provided for notification purposes ONLY; The AWT will automatically handle add and remove operations internally so the program works properly regardless of whether the program registers a ContainerListener or not.

Since:
1.1
See Also:
ContainerAdapter, ContainerEvent, Tutorial: Writing a Container Listener

  • Method Summary

    Modifier and Type Method Description
    void componentAdded​(ContainerEvent e)
    Invoked when a component has been added to the container.
    void componentRemoved​(ContainerEvent e)
    Invoked when a component has been removed from the container.

  • Method Details

    • componentAdded

      void componentAdded​(ContainerEvent e)
      Invoked when a component has been added to the container.
      Parameters:
      e - the event to be processed

    • componentRemoved

      void componentRemoved​(ContainerEvent e)
      Invoked when a component has been removed from the container.
      Parameters:
      e - the event to be processed