How to let JAXB render boolean as 0 and 1, not true and false

Question

Got a quick question. Does anyone know how to let JAXB (marshall) render boolean fields as 1 and 0 instead of printing out "true" and "false"?

Answer 1

The adapter class:

import javax.xml.bind.annotation.adapters.XmlAdapter;  public class BooleanAdapter extends XmlAdapter<Integer, Boolean> {     @Override     public Boolean unmarshal( Integer s )     {         return s == null ? null : s == 1;     }      @Override     public Integer marshal( Boolean c )     {         return c == null ? null : c ? 1 : 0;     } } 

Usage:

@XmlElement( name = "enabled" ) @XmlJavaTypeAdapter( BooleanAdapter.class ) public Boolean getEnabled() {     return enabled; }