XMLJavaTypeAdapter not working in Exception Classes

@Stateless
@WebService
public class MyEJB {

    public void launcheMyException() throws MyException {
        return;
    }
}

@XmlAccessorType(XmlAccessType.FIELD)
public class MyException extends Exception {

 @XmlJavaTypeAdapter(Cl1ToCl2Adapter.class)
    MyClass1 obj1;

    @XmlJavaTypeAdapter(NoArgObjAdapter.class)
    NoArgObj obj2;

    public MyClass1 getObj1() {
		return obj1;
	}
    
    public void setObj1(MyClass1 obj1) {
		this.obj1 = obj1;
	}

	public NoArgObj getObj2() {
        return obj2;
    }

    public void setObj2(NoArgObj obj2) {
        this.obj2 = obj2;
    }
}

public class Cl1ToCl2Adapter extends XmlAdapter<MyClass2,MyClass1> {

    @Override
	public MyClass2 marshal(MyClass1 v) throws Exception {
		return new MyClass2();
	}

	@Override
	public MyClass1 unmarshal(MyClass2 v) throws Exception {
		MyClass1 mc1 = new MyClass1(v.getS2());
		return mc1;
	}


}

<xs:complexType name="MyException">
<xs:sequence>
<xs:element name="str" nillable="true" type="xs:string"/>
<xs:element name="obj2" nillable="true" type="xs:string"/>
</xs:sequence>
</xs:complexType>