Generic Methods
Bounded Type Parameters
Wildcards
Type Erasure
Reference
http://download.oracle.com/javase/tutorial/java/generics/index.html
http://download.oracle.com/javase/tutorial/extra/generics/index.html
http://jjhou.boolan.com/programmer-5-generic-java.htm
http://www.lifeparty.idv.tw/blog/archives/2...