Class MouseAdapter

java.lang.Object

java.awt.event.MouseAdapter

All Implemented Interfaces:: MouseListener, MouseMotionListener, MouseWheelListener, EventListener

Direct Known Subclasses:: BasicComboPopup.InvocationMouseHandler, BasicComboPopup.ListMouseHandler, BasicFileChooserUI.DoubleClickListener, BasicScrollBarUI.ArrowButtonListener, BasicScrollBarUI.TrackListener, BasicSplitPaneDivider.MouseHandler, BasicTabbedPaneUI.MouseHandler, BasicTreeUI.MouseHandler, FormView.MouseEventListener, HTMLEditorKit.LinkController, MetalFileChooserUI.SingleClickListener, MouseInputAdapter, ToolTipManager

public abstract class MouseAdapter extends Object implements MouseListener, MouseWheelListener, MouseMotionListener

An abstract adapter class for receiving mouse events. The methods in this class are empty. This class exists as convenience for creating listener objects.

Mouse events let you track when a mouse is pressed, released, clicked, moved, dragged, when it enters a component, when it exits and when a mouse wheel is moved.

Extend this class to create a MouseEvent (including drag and motion events) or/and MouseWheelEvent listener and override the methods for the events of interest. (If you implement the MouseListener, MouseMotionListener 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 the extended class and then register it with a component using the component's addMouseListener addMouseMotionListener, addMouseWheelListener methods. The relevant method in the listener object is invoked and the MouseEvent or MouseWheelEvent is passed to it in following cases:

when a mouse button is pressed, released, or clicked (pressed and released)
when the mouse cursor enters or exits the component
when the mouse wheel rotated, or mouse moved or dragged

Since:

1.1

See Also:

Constructor Summary

MouseAdapter()

Modifier	Constructor	Description
`protected`	Constructs a `MouseAdapter`.

Method Summary

Modifier and Type	Method	Description
`void`	`mouseClicked(MouseEvent e)`	Invoked when the mouse button has been clicked (pressed and released) on a component.
`void`	`mouseDragged(MouseEvent e)`	Invoked when a mouse button is pressed on a component and then dragged.
`void`	`mouseEntered(MouseEvent e)`	Invoked when the mouse enters a component.
`void`	`mouseExited(MouseEvent e)`	Invoked when the mouse exits a component.
`void`	`mouseMoved(MouseEvent e)`	Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.
`void`	`mousePressed(MouseEvent e)`	Invoked when a mouse button has been pressed on a component.
`void`	`mouseReleased(MouseEvent e)`	Invoked when a mouse button has been released on a component.
`void`	`mouseWheelMoved(MouseWheelEvent e)`	Invoked when the mouse wheel is rotated.

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

MouseAdapter

protected MouseAdapter()

Constructs a MouseAdapter.

Method Details

mouseClicked

public void mouseClicked(MouseEvent e)

Invoked when the mouse button has been clicked (pressed and released) on a component.

Specified by:: mouseClicked in interface MouseListener
Parameters:: e - the event to be processed

mousePressed

public void mousePressed(MouseEvent e)

Invoked when a mouse button has been pressed on a component.

Specified by:: mousePressed in interface MouseListener
Parameters:: e - the event to be processed

mouseReleased

public void mouseReleased(MouseEvent e)

Invoked when a mouse button has been released on a component.

Specified by:: mouseReleased in interface MouseListener
Parameters:: e - the event to be processed

mouseEntered

public void mouseEntered(MouseEvent e)

Invoked when the mouse enters a component.

Specified by:: mouseEntered in interface MouseListener
Parameters:: e - the event to be processed

mouseExited

public void mouseExited(MouseEvent e)

Invoked when the mouse exits a component.

Specified by:: mouseExited in interface MouseListener
Parameters:: e - the event to be processed

mouseWheelMoved

public void mouseWheelMoved(MouseWheelEvent e)

Invoked when the mouse wheel is rotated.

Specified by:

mouseWheelMoved in interface MouseWheelListener

Parameters:

e - the event to be processed

Since:

1.6

See Also:

mouseDragged

public void mouseDragged(MouseEvent e)

Invoked when a mouse button is pressed on a component and then dragged. MOUSE_DRAGGED events will continue to be delivered to the component where the drag originated until the mouse button is released (regardless of whether the mouse position is within the bounds of the component).

Due to platform-dependent Drag&Drop implementations, MOUSE_DRAGGED events may not be delivered during a native Drag&Drop operation.

Specified by:: mouseDragged in interface MouseMotionListener
Parameters:: e - the event to be processed
Since:: 1.6

mouseMoved

public void mouseMoved(MouseEvent e)

Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.

Specified by:: mouseMoved in interface MouseMotionListener
Parameters:: e - the event to be processed
Since:: 1.6

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