code: public void importClass(String name) throws ELException {
          int i = name.lastIndexOf('.');
          if (i <= 0) {
              throw new ELException(
                  "The name " + name + " is not a full class name");
          }
          String className = name.substring(i+1);
          classNameMap.put(className, name);
      }
docs: Import a class.
  @param name The full class name of the class to be imported
  @throws ELException if the name does not include a ".".