code: public EasyJaSubDictionaryEntry getEntry(String word) {
  		if (word == null || word.length() == 0) {
  			throw new RuntimeException("Invalid word");
  		}
  		EasyJaSubTrie.Value<EasyJaSubDictionaryEntry> value = trie
  				.get(new CharacterIterator(word));
  		if (value == null) {
  			return null;
  		}
  		return value.getValue();
  	}
docs: Returns an entry corresponding to specified word, or to a prefix of it
  
  @param word
  @return