Do not put cl***** in default package?

Greetings Folks,

        I'm going through the beans trail tutorials on Sun's website
trying 
to teach myself about JavaBeans components.  The tutorial tells me to
right 
click on the "default package" and add a MyBean class.  OK, so I do this, 
but I notice that there is a "small print" disclaimer at the bottom of the

dialog window telling me that "Since JDK 1.4 it is not recommended to put 
cl***** in the default package."  OK, so what gives?   I do realize that
the 
tutorial is based on using NetBeans IDE v.5 and that I am using v.5.5. 
So, 
what is the presently prescribed method for adding cl***** to beans?

TIA,
Mark