Correspondence to Apache Lucene 4.5.x, and detailed change of java_scr 

* It corresponds to Lucene-5114 [remove boolean useCache param from TermsEnum.seekCeil/Exact].
  https://issues.apache.org/jira/browse/LUCENE-5114

   TermsEnum.SeekStatus seekCeil(BytesRef text, boolean useCache) is removed@Lucene 4.5.x
* "final" is added to the variable which is not changed.
* The processing which judges whether it is effective in logger is added.