(1)事件源

任何组件上都可以发生鼠标事件

鼠标进入组件、退出组件、在组件上方按下、松开、点击鼠标。

拖动鼠标、运动鼠标等都触发鼠标事件。

(2)监视器

addMouseListener(MouseListener listener)

addMouseMotionListener(MouseMotionListener listener)

(3)处理事件的接口

MouseListener接口(有5个方法)

mousePressed(MouseEvent)

mouseReleased(MouseEvent)

mouseEntered(MouseEvent)

mouseExited(MouseEvent)

mouseClicked(MouseEvent)

MouseMotionListener接口(有2个方法)

mouseDragged(MouseEvent)

mouseMoved(MouseEvent)