Results of grep at sun/net/idn :
  Punycode.java:import sun.text.normalizer.UCharacter;
  Punycode.java:import sun.text.normalizer.UTF16;
  StringPrep.java:import sun.text.normalizer.CharTrie;
  StringPrep.java:import sun.text.normalizer.Trie;
  StringPrep.java:import sun.text.normalizer.NormalizerImpl;
  StringPrep.java:import sun.text.normalizer.VersionInfo;
  StringPrep.java:import sun.text.normalizer.UCharacter;
  StringPrep.java:import sun.text.normalizer.UCharacterIterator;
  StringPrep.java:import sun.text.normalizer.UTF16;
  StringPrepDataReader.java:import sun.text.normalizer.ICUBinary;




And,
    "Normalizer.UNICODE_3_2|NormalizerImpl.BEFORE_PRI_29));"
should be modified to
    "Normalizer.UNICODE_3_2));"

Because Normalizer.UNICODE_3_2 is defined as
                               NormalizerBase.UNICODE_3_2 |
                               NormalizerImpl.WITHOUT_CORRIGENDUM4_CORRECTIONS |
                               NormalizerImpl.BEFORE_PRI_29;
"|NormalizerImpl.BEFORE_PRI_29" is not necessary.