Java Tricky Question - 6

whats the difference between

 < servlet-mapping >
     < servlet-name >ServletOne< / servlet-name >
     < url-pattern >/mywebsite/myservlet< / url-pattern >
 < / servlet-mapping >

  < servlet-mapping >
     < servlet-name >ServletTwo< / servlet-name >
     < url-pattern >/mywebsite/myservlet/< / url-pattern >
 < / servlet-mapping >   

  < servlet-mapping >
     < servlet-name >ServletThree< / servlet-name >
     < url-pattern >/mywebsite/myservlet/*< / url-pattern >
 < / servlet-mapping >

Dont ask me the answer ,,,, rather help me finding one ... ;o)
this one is still under discussion ... at java ranch