title: For which surprises do I have to prepare myself if I switch from Sun JDK to OpenJDK?
body: <p>If I'd switch from Sun JDK to OpenJDK which surprises do I have to prepare myself for?</p>
  
  <p>What does frequently go wrong and how difficult can this be?</p>
  
  <p>Of course, each and every application can have its individual problems, but I'm looking for <em>classes</em> of problems, something many people already have struggled with when switching JDKs.</p>