XML : Java XStream Serialization

I have the following XML structure:

  <MNBCurrentExchangeRates>    <Day date="2016-03-25">      <Rate unit="1" curr="AUD">211,37000</Rate>      <Rate unit="1" curr="BGN">160,27000</Rate>    </Day>  </MNBCurrentExchangeRates>    

I have to generate XML strings just like this. To do so I specified the following class structure:

This is the root, called MNBCurrentExchangeRates

  package Contracts.Mnb;    import com.thoughtworks.xstream.annotations.*;  import java.util.ArrayList;  import java.util.List;    @XStreamAlias("MNBCurrentExchangeRates")  public class MNBCurrentExchangeRates  {        @XStreamAlias("Day")      @XStreamImplicit      protected List<Day> day;        public List<Day> getDay()       {          if (day == null)           {              day = new ArrayList<Day>();          }          return this.day;      }  }    

The Day Node:

  package Contracts.Mnb;    import com.thoughtworks.xstream.annotations.*;  import java.util.ArrayList;  import java.util.List;    @XStreamAlias("Day")  public class Day {        @XStreamAlias("Rate")      @XStreamImplicit      protected List<Rate> rate;        @XStreamAlias("date")      @XStreamAsAttribute      protected String date;        public List<Rate> getRate()       {          if (rate == null)           {              rate = new ArrayList<Rate>();          }          return this.rate;      }        public String getDate()       {          return date;      }        public void setDate(String value)       {          this.date = value;      }  }    

The Rate node:

  package Contracts.Mnb;    import com.thoughtworks.xstream.annotations.*;    @XStreamAlias("Rate")  public class Rate   {        protected String value;        @XStreamAlias("unit")      @XStreamAsAttribute      protected String unit;        @XStreamAlias("curr")      @XStreamAsAttribute      protected String curr;        public String getValue()       {          return value;      }        public void setValue(String value)       {          this.value = value;      }        public String getUnit()       {          return unit;      }        public void setUnit(String value)       {          this.unit = value;      }        public String getCurr()       {          return curr;      }        public void setCurr(String value)       {          this.curr = value;      }  }    

For serialization I use the following code:

      XStream stream = new XStream();      stream.processAnnotations(MNBCurrentExchangeRates.class);                String rates = stream.toXML(exchangeRates);    

Where exchangeRates is an instance of the MNBCurrentExchangeRates class.

Serializing it returns the following XML string:

  <MNBCurrentExchangeRates>    <Day date="2016-03-25">      <Rate unit="1" curr="EUR">        <value>300</value>      </Rate>    </Day>  </MNBCurrentExchangeRates>    

I don't need the value node. I want the actual Rate to be the value of the Rate node like in the example. How can I achieve this?

Thank you.