For example, with the following class definitions:

class Animal {}
class Dog extends Animal {}
class Cat extends Animal {}

The user would be required to create JAXBContext as JAXBContext.newInstance(Dog.class,Cat.class) (Animal will be automatically picked up since Dog and Cat refers to it.)

XmlSeeAlso annotation would allow you to write:

@XmlSeeAlso({Dog.class,Cat.class})
class Animal {}
class Dog extends Animal {}
class Cat extends Animal {}

我想知道, 如何根据父类, 得到子类的对象.