According to my knowledge a class can contain
1.Member variables
2.Member functions
3.Static blocks
4.Non-Static blocks
5.Constructors
6.Inner Classes
Is there are any things which a class can contain other than the above specified things.
Yes; class (static) members (variables and methods) and nested classes (superset of inner classes), nested interfaces, etc. off the top of my head.
For the complete list, check the JLS:
http://java.sun.com/docs/books/jls/third_edition/html/classes.html