http://www.25hoursaday.com/CsharpVsJava.html#interfaceMI
http://www.kynosarges.org/JavaCSharp.html#NestedClasses
http://www.harding.edu/fmccown/java_csharp_comparison.html
http://it.toolbox.com/blogs/codesharp/java-for-c-developers-21248
http://www.c-sharpcorner.com/Blogs/12379/switching-to-java-is-self-destructive.aspx