public static void rollbackConnectionQuiet(@Nullable Connection rsrc){
  if (rsrc != null)   try {
    rsrc.rollback();
  }
 catch (  SQLException ignored) {
  }
}

public static void rollbackConnectionQuiet ( @ Nullable Connection rsrc ) { if ( rsrc != null ) try { rsrc . rollback ( ) ; } catch ( SQLException ignored ) { } }
quietly rollbacks jdbc connection ignoring possible checked exception .
