title: Should I place a built in Class (such as Date) as a separate class in my UML
body: <p>I'm creating a UML Class Diagram for an inventory system as part of a class assignment. I used members such as String and Date in a few of my Classes. My group members are saying that I should include a Date class because it is an object. </p>
  
  <p>My assumption is that we were using Java or some other language with a built in Date object.</p>
  
  <p>Do I need to explicitly state a class for Date? What about the String object?</p>
  
  <p>What other languages besides Java has a built in Date type that can be used to develop a client/server such as an inventory system.</p>