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    <p>Answer to this question starts from basic java principal. Since derived class override setName and getName . (new Employee()).setName("John") populates Employee's name not Person's. So if you want to populate properties of both the classes you should change person class to </p> <pre><code>@XmlSeeAlso(Employee.class) public abstract class Person { protected String firstName; public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } } </code></pre> <p>and do marshal of this.</p> <pre><code>Employee e = new Employee(); e.setName("John"); e.setLastName("JohnLast"); </code></pre> <p>then your xml will look like</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt; &lt;employee&gt; &lt;lastName&gt;JohnLast&lt;/lastName&gt; &lt;name&gt;John&lt;/name&gt; &lt;/employee&gt; </code></pre> <p>and xsd </p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt; &lt;xs:schema version="1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt; &lt;xs:element name="employee" type="employee"/&gt; &lt;xs:complexType name="employee"&gt; &lt;xs:complexContent&gt; &lt;xs:extension base="person"&gt; &lt;xs:sequence&gt; &lt;xs:element name="name" type="xs:string" minOccurs="0"/&gt; &lt;/xs:sequence&gt; &lt;/xs:extension&gt; &lt;/xs:complexContent&gt; &lt;/xs:complexType&gt; &lt;xs:complexType name="person" abstract="true"&gt; &lt;xs:sequence&gt; &lt;xs:element name="lastName" type="xs:string" minOccurs="0"/&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;/xs:schema&gt; </code></pre> <p>and during unmarshalling following works and name and lastName gets populated,</p> <pre><code>JAXBContext context = JAXBContext.newInstance(Employee.class); Unmarshaller unmarshaller = context.createUnmarshaller(); Employee e = (Employee) unmarshaller.unmarshal(xml); Person p = (Person) unmarshaller.unmarshal(xml); </code></pre>
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