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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/event/MouseAdapter.html below:

MouseAdapter (Java SE 19 & JDK 19)

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

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:

• MouseEvent
• MouseWheelEvent
• MouseListener
• MouseMotionListener
• MouseWheelListener
• Tutorial: Writing a Mouse Listener

• Constructor Summary

  Constructors

  protected

  Constructs a MouseAdapter.

• Method Summary

  void

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

  void

  Invoked when a mouse button is pressed on a component and then dragged.

  void

  Invoked when the mouse enters a component.

  void

  Invoked when the mouse exits a component.

  void

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

  void

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

  void

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

  void

  Invoked when the mouse wheel is rotated.

  Methods declared in class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Constructor Details
  • MouseAdapter

    protected MouseAdapter()

    Constructs a MouseAdapter.

• Method Details
  • mouseClicked

    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

    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

    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

    Invoked when the mouse enters a component.

    Specified by:

    mouseEntered in interface MouseListener

    Parameters:

    e - the event to be processed

  • mouseExited

    Invoked when the mouse exits a component.

    Specified by:

    mouseExited in interface MouseListener

    Parameters:

    e - the event to be processed

  • mouseWheelMoved

    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:

    • MouseWheelEvent

  • mouseDragged

    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

    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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