Spring intercept-url patterns "/** Vz /*"

http://stackoverflow.com/questions/5240794/spring-intercept-url-patterns : "Melv" says that  the difference between /* and /** is as follows
Eg:

Main.java
directory/Main.java

/*: Files only at the / directory level are matched. Contents of directories are not processed. Thus only Main.java is returned.

/**: Pattern matcher recurses into directories also. Thus /**/*.java returns the directory/Main.java too along with /Main.java.