title: Valid range for java.util.Date?
body: <p>what is the range for valid values that I can store in java.util.Date? 
  The <a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html">API</a> doesn't say much about this.</p>
  
  <p>Or does it only support dates that can be expressed as unix timestamps (that is dates after 1.1.1970)? If so, is there maybe a (serializeable) class in the JDK that supports also dates prior to that?</p>
  
  <p>What I'm looking for is a class/type for a birthday-field in db4o</p>