BP_Example2.java

class Example {
    final static BiFunction<ResultSet, Integer, String> STRING =
              (r, index) -> {
 	          try {
 		       return r.getString(index);
 		  } catch (SQLException e) {
 		       throw new RuntimeException(e);
 	       }
 	  };
    void example() {
          Bean bean = new Bean();
          Extractor<Bean> extractor = new ExtractorFactory<>()
               .factory(Bean::new)
               .add(Bean::setStr, STRING, 1)
               .getExtractor();
    }
    class Bean {
        String str;
        void setStr(String str) {
            this.str = str;
        }
    }
}