add 2-5-EventBinding

java/2-5-EventBinding/AdapterEvents.java

java/2-5-EventBinding/EventLoop.java

java/2-5-EventBinding/InheritanceEvents.java

java/2-5-EventBinding/InterfaceEvents.java

java/2-5-EventBinding/ListenerEvents.java

java/2-5-EventBinding/makefile

java/2-5-EventBinding/readme.md