JAXB immutable objects

Yesterday, we faced a weird problem. Apache cxf was not generating schema definitions for immutable objects. Looking a bit deeper, the problem was with JAXB, the default databinding technology for apache cxf. Googled "jaxb immutable", and found out i was not alone facing the problem, but the solution of using the "no-args constructor" did not work me. Finally after spending a good 2 hrs on it, finally found the solution. You need to add a no-args constructor AND add @XmlAccessorType(XmlAccessType.FIELD) annotation to the class.

The following object did NOT work -

public class CreditCardVO implements Serializable {
 private Long ccNumber;
 private String ccName;

 public CreditCardVO(Long ccNumber, String ccName) {
     this.ccNumber = ccNumber;
     this.ccName = ccName;
 }

 public Long getCcNumber() {
     return ccNumber;
 }

 public String getCcName() {
     return ccName;
 }

}

When i added the no-args constructor and the annotations it worked!

@XmlAccessorType(XmlAccessType.FIELD)
public class CreditCardVO implements Serializable {
 private Long ccNumber;
 private String ccName;

 public CreditCardVO(Long ccNumber, String ccName) {
     this.ccNumber = ccNumber;
     this.ccName = ccName;
 }

 private CreditCardVO() {
       // for JAXB's Magic
   }

 public Long getCcNumber() {
     return ccNumber;
 }

 public String getCcName() {
     return ccName;
 }

}