title: Serialize Jaxb Pojos to multiple or different namespaces
body: <p>Consider the following code:</p>
  
  <pre><code>Main.java
  ====
  package com.sample;
  
  import com.sample.entity.Customer;
  import javax.xml.bind.JAXBContext;
  import javax.xml.bind.JAXBException;
  import javax.xml.bind.Marshaller;
  
  public class Main {    
  
      public static void main(String[] args) throws JAXBException {
         JAXBContext jc = JAXBContext.newInstance(Customer.class);
  
         Customer customer = new Customer();
         customer.setId(123);
  
         Marshaller m = jc.createMarshaller();
         m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
         m.marshal(customer, System.out);    
      }
  }
  
  
  Customer.java
  ====
  package com.sample.entity;
  
  import javax.xml.bind.annotation.XmlAttribute;
  import javax.xml.bind.annotation.XmlRootElement;
  
  @XmlRootElement
  public class Customer {
      private long id;
  
      public long getId() {
          return id;
      }
  
      public void setId(long id) {
          this.id = id;
      }
  }
  
  package-info.java
  ====
  @XmlSchema(namespace = "http://www.example.org/package", elementFormDefault = XmlNsForm.QUALIFIED)
  package com.sample.entity;
  
  import javax.xml.bind.annotation.XmlSchema;
  import javax.xml.bind.annotation.XmlNsForm;
  </code></pre>
  
  <p>I wish to reuse the Customer POJO and create two different namespace values. So first I wish to print the output </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt;
  &lt;customer xmlns="http://www.example.org/package"&gt;
      &lt;id&gt;123&lt;/id&gt;
  &lt;/customer&gt;
  </code></pre>
  
  <p>like the current code does, then create a second xml with a different main namespace from the same pojo that will look like this</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt;
  &lt;customer xmlns="http://www.another.org/package"&gt;
      &lt;id&gt;123&lt;/id&gt;
  &lt;/customer&gt;
  </code></pre>
  
  <p>or remove the namespace all together</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt;
  &lt;customer&gt;
      &lt;id&gt;123&lt;/id&gt;
  &lt;/customer&gt;
  </code></pre>