![]() Press and hold the mouse button again, and then drag the mouse so that the cursor ends up outside the window.If you did not move the mouse, a mouse-clicked event will follow. You might see some extra mouse events, such as mouse-exited and then mouse-entered. Press and hold the left mouse button without moving the mouse.You will see one or more mouse-entered events. Move the cursor into the yellow rectangle at the top of the window.Alternatively, to compile and run the example yourself, consult the example index. ![]() ![]() Java™ Web Start ( download JDK 7 or later). Click the Launch button to run MouseEventDemo using.By moving the cursor on top of the blank area and occasionally pressing mouse buttons, you can fire mouse events. Each time a mouse event occurs, a descriptive message is displayed under the blank area. The mouse listener listens for events both on the BlankArea and on its container, an instance of MouseEventDemo. At the top of the window is a blank area (implemented by a class named BlankArea). The following example shows a mouse listener. MouseAdapter class, which implements the MouseListener, MouseMotionListener, and MouseWheelListener interfaces. However, the MouseInputListener interface does not implement the MouseWheelListener interface. MouseInputListener, a convenient interface that implements the MouseListener and MouseMotionListener interfaces. If an application requires the detection of both mouse events and mouse-motion events, use the See How to Write a Mouse Wheel Listener for more information. To track mouse wheel events, you can register a mouse-wheel listener. That is why mouse-motion events are separated into Mouse Motion listener type (see How to Write a Mouse Motion Listener). Tracking the cursor's motion involves significantly more system overhead than tracking other mouse events. Mouse events occur when the cursor enters or exits a component's onscreen area and when the user presses or releases one of the mouse buttons. Register for mouse events on blankArea and panel.Mouse events notify when the user uses the mouse (or similar input device) to interact with a component. Public class MouseMotionEventDemo extends JPanel Additionally, MouseMotionEventDemo implements the mouseDragged and mouseMoved methods instead of the mouse listener methods, and displays coordinates instead of numbers of clicks. This demo is exactly the same as the demo described in the How to Write a Mouse Listener section, except for substituting the MouseMotionListener interface for the MouseListener interface. The following demo code contains a mouse-motion listener. MouseAdapter AWT class, which implements the MouseMotionListener interface, to create a MouseMotionEvent and override the methods for the specific events. MouseInputListener a convenient interface that implements both the MouseListener and MouseMotionListener interfaces. MouseInputAdapter class, which implements the ![]() For information on listening for mouse-wheel events, see How to Write a Mouse Wheel Listener. For information on listening for other kinds of mouse events, such as clicks, see How to Write a Mouse Listener. Mouse-motion events notify when the user uses the mouse (or a similar input device) to move the onscreen cursor.
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