Class ComponentAdapter

java.lang.Object
java.awt.event.ComponentAdapter
All Implemented Interfaces:
ComponentListener, EventListener
Direct Known Subclasses:
BasicSliderUI.ComponentHandler, BasicTreeUI.ComponentHandler, JViewport.ViewListener
public abstract class ComponentAdapter extends Object implements ComponentListener
An abstract adapter class for receiving component events. The methods in this class are empty. This class exists as convenience for creating listener objects.

Extend this class to create a ComponentEvent listener and override the methods for the events of interest. (If you implement the ComponentListener interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)

Create a listener object using your class and then register it with a component using the component's addComponentListener method. When the component's size, location, or visibility changes, the relevant method in the listener object is invoked, and the ComponentEvent is passed to it.

Since:
1.1
See Also:

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    ComponentAdapter()
    Constructs a ComponentAdapter.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    componentHidden(ComponentEvent e)
    Invoked when the component has been made invisible.
    void
    componentMoved(ComponentEvent e)
    Invoked when the component's position changes.
    void
    componentResized(ComponentEvent e)
    Invoked when the component's size changes.
    void
    componentShown(ComponentEvent e)
    Invoked when the component has been made visible.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • ComponentAdapter

      protected ComponentAdapter()
      Constructs a ComponentAdapter.

  • Method Details