JAXB custom conversion using @XmlJavaTypeAdapter

To provide your own conversion implementation of a JAXB property, annotate the property in your JAXB class with javax.xml.bind.annotation.adapters.@XmlJavaTypeAdapter:

    @XmlJavaTypeAdapter(MyAdapter.class)
    public void setFrom(LocalDate from) {
        this.from = from;
    }
 
Then write your Adapter marshalling your LocalDate attribute to an XML value String and unmarshalling it:

    public class MyDateAdapter extends XmlAdapter<String, LocalDate> {
    public LocalDate unmarshal(String myString) throws Exception {
      return LocalDate.parse(myString);
    }

    public String marshal(LocalDate myDate) throws Exception {
      return myDate.toString();
    }
  }