code: public boolean dropTableIfExists(final String tableName) {
          Connection conn = getConnection();
  
          try {
              return JdbcUtil.dropTableIfExists(conn, tableName);
          } finally {
              closeQuietly(conn);
          }
      }
docs: Returns {@code true} if succeed to drop table, otherwise {@code false} is returned.
  
  @param tableName
  @return