Graphic Java™ 1.2, Volume I: AWT, Third Edition

Component Events

As evidenced by Figure 9-4, there are two types of AWT events: component events, which extend ComponentEvent, and semantic events, which extend AWTEvent. Table 9-5 lists the classes representing the two types of events.

Table 9-5. AWT Event Classes (all classes are from the java.awt.event package)

Semantic Events	Component Events
ActionEvent	ComponentEvent
AdjustmentEvent	ContainerEvent
ItemEvent	FocusEvent
TextEvent	InputEvent
	KeyEvent
	MouseEvent
	MouseMotionEvent
	WindowEvent

Component events are fired when something specific happens to a component, for example: the mouse enters/exits the component or is pressed within it; the component gains or loses keyboard focus; the component is a window that is closing, etc. Component ...