JavaBean and JDK1.1 AWT Event Model

• The various listeners and events are named in pairs XListener (an interface extending java.util.EventListener) and XEvent (an object extending java.util.EventObject)

• Registration involves methods for the source called

  • public void addXListener ( XListener callbackobject)
  • public void removeXListener ( XListener callbackobject)
  • These increment or decrement an array of listeners which the source must keep

• Such naming conventions are part of the design pattern for the JavaBean (JDK1.1) framework

• X = Component, Focus, Key, Mouse, MouseMotion, Window, Container, Text, Action, Adjustment and Item in JDK1.1 AWT

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