Classes.java 文件源码

/**
 * Used to dynamically load a filter class, and create a Writable filter.
 * This filter class most likely extends Configurable.
 *
 * @param className the filter class name.
 * @return a filter
 */
@SuppressWarnings("unchecked")
public static Filter createWritableForName(String className) {
  try {
    Class<? extends Filter> clazz =
      (Class<? extends Filter>) Class.forName(className, true, CLASS_LOADER);
    return (Filter)WritableFactories.newInstance(clazz, new Configuration());
  } catch (ClassNotFoundException e) {
    throw new RuntimeException("Can't find class " + className);
  }
}