Question

Am trying to marshall a class that contains a List of Interface type. JAXB complains that he cannot handle interfaces.

  class Myclass{

        private List<MyInterface> list = new ArrayList<MyInterface>();
        .... 

  }
  interface MyInterface{
          get();
  }

How can i annotate this so that jaxb can marshall an instance of MyClass class?

Answer 1

You can use the @XmlElement annotation to provide the JAXB implementation with the concrete class that you want to use for that interface.

class MyClass{

    @XmlElement(type=MyInterfaceImpl.class)
    private List<MyInterface> list = new ArrayList<MyInterface>();
    .... 

}

For More Information

• http://blog.bdoughan.com/2011/05/jaxb-and-interface-fronted-models.html