获取泛型类对应的class类型

自己写来备忘的,如有错误,请指正!

public class Demo<T> {
	private Class<T> clazz;

	public Demo() {
		ParameterizedType parametclass = (ParameterizedType) this.getClass().getGenericSuperclass();
		Type[] actualTypeArguments = parametclass.getActualTypeArguments();
		clazz = (Class<T>) actualTypeArguments[0];
	}
}