Get.java 文件源码

@SuppressWarnings("unchecked")
private Writable createForName(String className) {
  try {
    Class<? extends Writable> clazz =
      (Class<? extends Writable>) Class.forName(className);
    return WritableFactories.newInstance(clazz, new Configuration());
  } catch (ClassNotFoundException e) {
    throw new RuntimeException("Can't find class " + className);
  }
}