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

ComponentAdapter()

Modifier	Constructor	Description
`protected`	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()`	Creates and returns a copy of this object.
`boolean`	`equals(Object obj)`	Indicates whether some other object is "equal to" this one.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`int`	`hashCode()`	Returns a hash code value for this object.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()`	Returns a string representation of the object.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

ComponentAdapter

protected ComponentAdapter()

Constructs a ComponentAdapter.

Method Details

componentResized

public void componentResized(ComponentEvent e)

Invoked when the component's size changes.

Specified by:: componentResized in interface ComponentListener
Parameters:: e - the event to be processed

componentMoved

public void componentMoved(ComponentEvent e)

Invoked when the component's position changes.

Specified by:: componentMoved in interface ComponentListener
Parameters:: e - the event to be processed

componentShown

public void componentShown(ComponentEvent e)

Invoked when the component has been made visible.

Specified by:: componentShown in interface ComponentListener
Parameters:: e - the event to be processed

componentHidden

public void componentHidden(ComponentEvent e)

Invoked when the component has been made invisible.

Specified by:: componentHidden in interface ComponentListener
Parameters:: e - the event to be processed

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