package com.baeldung.utility; import java.text.SimpleDateFormat; import java.util.Date; import com.baeldung.pojo.Customer; import com.thoughtworks.xstream.converters.SingleValueConverter; public class MySingleValueConverter implements SingleValueConverter { @Override public boolean canConvert(Class clazz) { return Customer.class.isAssignableFrom(clazz); } @Override public Object fromString(String arg0) { return null; } @Override public String toString(Object obj) { SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy"); Date date = ((Customer) obj).getDob(); return ((Customer) obj).getFirstName() + "," + ((Customer) obj).getLastName() + "," + formatter.format(date); } }