个人比较喜欢Flex的事件派发、监听，仿Flex编写一版Java版的，使用起来还不错，还未想好下版需要增加的功能，欢迎大家指正、建议-Flex personally like the event-dispatch, monitoring, imitation Flex write a version of Java version, use good, yet like a good next version requires increased functionality, welcome t