// one line HashSet initialise
private static final HashSet<String> exceptions =
      new HashSet<String>(Arrays.asList( "platypus", "kangaroo", "wallaby" ));

// prior to JDK 1.5 you would write that as:
private static final HashSet exceptions =
      new HashSet(Arrays.asList( new String[] {"platypus", "kangaroo", "wallaby"} ));