title: Is there a good comparison between Functional Java and Guava?
body: <p>I'd like to use either Functional Java or Guava (or less likely Scala) in a course I'll be teaching.  Although there are lots of functional languages that run on the JVM I'd like to stick to something that looks as much like Java as possible, i.e., something that will be most compatible, conceptually and syntactically, with the functional features expected in Java 8.</p>
  
  <p>It looks like <a href="http://functionaljava.org/">Functional Java</a> and <a href="http://code.google.com/p/guava-libraries/">Guava</a> are the best candidates.  I haven't been able to find anything comparing them in terms of capabilities, ease of use, conceptual closeness to straight Java, etc. Does anyone know of a good comparison between these libraries?</p>