code: private void executeImmediate(String stmtText) throws SQLException
    {
      // execute the statement and auto-close it as well
      try (final Statement statement = this.createStatement())
      {
        statement.execute(stmtText);
      }
    }
docs: Execute a statement where the result isn't needed, and the statement is
  closed before this method returns
  
  @param stmtText text of the statement
  @throws SQLException exception thrown it the statement fails to execute